题解

191 条题解

  • 0
    @ 2009-11-04 11:31:07

    打表轻松0ms。。

    提供下我的超长丑陋打表程序:

    function make(n,k:longint):longint;

    var i,t,tn,tk:longint;

    begin

    tk:=2*trunc(ln(n)/ln(10)+1)-k; tn:=n;

    while tk>0 do

    begin

    tn:=tn div 10;

    dec(tk);

    end;

    t:=0;

    while tn>0 do

    begin

    t:=t*10+tn mod 10;

    tn:=tn div 10;

    end;

    tk:=k-trunc(ln(n)/ln(10)+1);

    while tk>0 do

    begin

    n:=n*10;

    dec(tk);

    end;

    inc(n,t);

    if palin(n) and check(n) then

    begin

    if not v[n] then

    begin

    inc(tot);

    a[tot]:=n;

    v[n]:=true;

    end;

    end;

    end;

  • 0
    @ 2009-11-02 09:59:05

    编译通过...

    ├ 测试数据 01:答案正确... 0ms

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 0ms

    ├ 测试数据 04:答案正确... 0ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:答案正确... 228ms

    ├ 测试数据 08:答案正确... 228ms

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:答案正确... 275ms

    ---|---|---|---|---|---|---|---|-

    Accepted 有效得分:100 有效耗时:731ms

    #include

    int check(int num)

    {

    int m=0;

    for(int n=num;n;n/=10)

    m=m*10+n%10;

    return m==num;

    }

    int check2(int a)

    {

    int i;

    int b=1;

    for(i=2;i*i-1>m>>n;

    if(m%2!=0)

    for(i=m;i9989899)break;if(check(i)&&check2(i))cout

  • 0
    @ 2009-11-01 17:42:14

    传了好多次 注意边界值能取到就好了

    var

    m,n,i,k,j,l,w:longint;

    s,s1,s2,s3:string;

    procedure check(a:longint);

    begin

    for w:=2 to trunc(sqrt(a)) do

    if a mod w=0

    then exit;

    writeln(a);

    end;

    begin

    readln(m,n);

    if (m=5)

    then writeln('5');

    if (m=7)

    then writeln('7');

    if (m=11)

    then writeln('11');

    for i:=1 to 999 do

    for k:=0 to 9 do

    begin str(i,s1);

    s:=s1;

    str(k,s2);

    s:=s+s2;

    for j:=length(s1) downto 1 do

    s:=s+s1[j];

    val(s,l);

    if l=m then if l mod 2=1 then check(l);

    end

    else halt;

    end;

    end.

  • 0
    @ 2009-10-23 16:30:38

    就是构造。。

    #include

    #include

    int save[10001],fang[100];

    int pan(int n)

    {

    int i;

    for(i=2;i

  • 0
    @ 2009-10-21 12:30:04

    用1-10000去生成回文数

    判断素数。

    输出即可。

    注意N>=5。。

    注意是用>还是用>=

  • 0
    @ 2009-10-19 20:09:50

    在usaco全a的程序在这里居然有一个点200错

    太诡异了

  • 0
    @ 2009-10-19 15:11:38

    终于100了。。。

  • 0
    @ 2009-10-18 19:29:28

    先从1..99999找回文数(根据左边生成右边)再判断素数。

    错误找出来了,原来是把11这个特殊的数字的位置放错了,Vijos的错误提示也在忽悠人- -。 为了这题,我的通过率降了10%啊啊啊啊啊啊

    编译通过...

    ├ 测试数据 01:答案正确... 0ms

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 0ms

    ├ 测试数据 04:答案正确... 0ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:答案正确... 72ms

    ├ 测试数据 08:答案正确... 41ms

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:答案正确... 56ms

    ---|---|---|---|---|---|---|---|-

    Accepted 有效得分:100 有效耗时:169ms

    编译通过...

    ├ 测试数据 01:答案错误...程序输出比正确答案长

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 0ms

    ├ 测试数据 04:答案正确... 0ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:答案错误...程序输出比正确答案长

    ├ 测试数据 08:答案正确... 103ms

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:答案错误...程序输出比正确答案长

    ---|---|---|---|---|---|---|---|-

    Unaccepted 有效得分:70 有效耗时:103ms

    上面都是Sunny的。

    下面是Edogawa Conan

    编译通过...

    ├ 测试数据 01:答案错误...程序输出比正确答案长

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 0ms

    ├ 测试数据 04:答案正确... 0ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:答案错误...程序输出比正确答案长

    ├ 测试数据 08:答案正确... 0ms

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:答案错误...程序输出比正确答案长

    ---|---|---|---|---|---|---|---|-

    Unaccepted 有效得分:70 有效耗时:0ms

  • 0
    @ 2009-10-17 23:01:01

    bool rev(int i)

    {

    int t=0,p=i;

    while(i)

    {

    t=t*10+i%10;

    i/=10;

    }

    return t==p? true:false;

    }

    这是判断回文数的。

    我最后一组数他说内存泄露,不知大家能告诉一下我的原因么? #include

    #include

    bool b[100000001];

    int prime[6000000];

    int sieve(int n)

    {

    int i,j;

    for(i=2;i*i

  • 0
    @ 2009-10-12 19:16:32

    编译通过...

    ├ 测试数据 01:答案正确... 0ms

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 0ms

    ├ 测试数据 04:答案正确... 0ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:答案正确... 0ms

    ├ 测试数据 08:答案正确... 0ms

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:答案正确... 0ms

    ---|---|---|---|---|---|---|---|-

    Accepted 有效得分:100 有效耗时:0ms

    program zifuchuan;

    var len,mid,i,j,n,m,k,s,t:longint;w,w1:string;code:integer;jw,bj:boolean;

    function pd(k:longint):boolean;

    begin

    if (k=1)or(k=2) then exit(false);

    for j:=2 to trunc(sqrt(k)) do if k mod j=0 then exit(false);

    exit(true);

    end;

    procedure change1;

    begin

    if len mod 2=1 then begin if w[mid+1]'9' then begin w[mid+1]:=char(ord(w[mid+1])+1);exit;end

    else begin w[mid+1]:='0';jw:=true;end;end;

    if mid0 then begin

    repeat

    if w[mid]'9' then begin w[mid]:=char(ord(w[mid])+1);w[len-mid+1]:=w[mid];exit;end

    else begin w[mid]:='0';w[len-mid+1]:='0';end;

    dec(mid);

    until mid=0; end;

    delete(w,1,1);

    w:='1'+w+'1';

    end;

    procedure change;

    begin

    jw:=false;

    len:=length(w);

    mid:=len div 2;

    for i:=1 to mid do begin

    if w[i]>w[len-i+1] then jw:=false else jw:=true;

    w[len-i+1]:=w[i];

    end;

    if (mid=0)or(jw=true)then change1;

    end;

    begin

    read(n,m);

    s:=0;

    assign(output,'wokaod.pas');rewrite(output);

    if n

  • 0
    @ 2009-10-09 22:19:14

    区别啊!

    vijos sunny

    编译通过...

    ├ 测试数据 01:答案正确... 0ms

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 25ms

    ├ 测试数据 04:答案正确... 72ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:运行超时...

    ├ 测试数据 08:运行超时...

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:运行超时...

    ---|---|---|---|---|---|---|---|-

    Unaccepted 有效得分:70 有效耗时:97ms

    puppy

    编译通过...

    ├ 测试数据 01:答案正确... 0ms

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 0ms

    ├ 测试数据 04:答案正确... 0ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:答案正确... 119ms

    ├ 测试数据 08:答案正确... 88ms

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:答案正确... 103ms

    ---|---|---|---|---|---|---|---|-

    Accepted 有效得分:100 有效耗时:310ms

  • 0
    @ 2009-09-25 23:44:21

    {}Program Vijos_P1042;

    {} Var i: Word; l, r, t: dWord;

    {} Function Z(n: dWord): Boolean;

    {} Var i: Word;

    {} Begin

    {} For i:=2 To Round(Sqrt(n)) Do

    {} If n Mod i = 0 Then Exit(False);

    {} Z:=True

    {} End;

    {} Begin

    {} Read(l, r);

    {} For i:=2 To 9 Do If (i>=l) And (i=l) And (t=r Then Halt;

    {} For i:=10 To 99 Do Begin

    {} t:=i*10+i Div 10;

    {} If (t>=l) And (t=r Then Halt;

    {} For i:=10 To 99 Do Begin

    {} t:=i*100+i Mod 10 * 10+i Div 10;

    {} If (t>=l) And (t=r Then Halt;

    {} For i:=100 To 999 Do Begin

    {} t:=i*100+i Div 10 Mod 10 * 10+i Div 100;

    {} If (t>=l) And (t=r Then Halt;

    {} For i:=100 To 999 Do Begin

    {} t:=i*1000+i Mod 10 * 100+i Div 10 Mod 10 * 10+i Div 100;

    {} If (t>=l) And (t=r Then Halt;

    {} For i:=1000 To 9999 Do Begin

    {} t:=i*1000+i Div 10 Mod 10 * 100+i Div 100 Mod 10 * 10+i Div 1000;

    {} If (t>=l) And (t=r Then Halt;

    {} For i:=1000 To 9999 Do Begin

    {} t:=i*10000+i Mod 10 * 1000+i Div 10 Mod 10 * 100+i Div 100 Mod 10 * 10+i Div 1000;

    {} If (t>=l) And (t

  • 0
    @ 2009-09-23 21:30:33

    生成回文数 判断素数 AC!

    编译通过...

    ├ 测试数据 01:答案正确... 0ms

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 0ms

    ├ 测试数据 04:答案正确... 0ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:答案正确... 0ms

    ├ 测试数据 08:答案正确... 0ms

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:答案正确... 0ms

    ---|---|---|---|---|---|---|---|-

    Accepted 有效得分:100 有效耗时:0ms

  • 0
    @ 2009-09-23 21:01:09

    叹气! 又见打表法!

  • 0
    @ 2009-09-20 20:48:36

    program ma;

    const

    bt:array[1..779] of longint=(5,

    7,

    11,

    101,

    131,

    151,

    181,

    191,

    313,

    353,

    373,

    383,

    727,

    757,

    787,

    797,

    919,

    929,

    10301,

    10501,

    10601,

    11311,

    11411,

    12421,

    12721,

    12821,

    13331,

    13831,

    13931,

    14341,

    14741,

    15451,

    15551,

    16061,

    16361,

    16561,

    16661,

    17471,

    17971,

    18181,

    18481,

    19391,

    19891,

    19991,

    30103,

    30203,

    30403,

    30703,

    30803,

    31013,

    31513,

    32323,

    32423,

    33533,

    34543,

    34843,

    35053,

    35153,

    35353,

    35753,

    36263,

    36563,

    37273,

    37573,

    38083,

    38183,

    38783,

    39293,

    70207,

    70507,

    70607,

    71317,

    71917,

    72227,

    72727,

    73037,

    73237,

    73637,

    74047,

    74747,

    75557,

    76367,

    76667,

    77377,

    77477,

    77977,

    78487,

    78787,

    78887,

    79397,

    79697,

    79997,

    90709,

    91019,

    93139,

    93239,

    93739,

    94049,

    94349,

    94649,

    94849,

    94949,

    95959,

    96269,

    96469,

    96769,

    97379,

    97579,

    97879,

    98389,

    98689,

    1003001,

    1008001,

    1022201,

    1028201,

    1035301,

    1043401,

    1055501,

    1062601,

    1065601,

    1074701,

    1082801,

    1085801,

    1092901,

    1093901,

    1114111,

    1117111,

    1120211,

    1123211,

    1126211,

    1129211,

    1134311,

    1145411,

    1150511,

    1153511,

    1160611,

    1163611,

    1175711,

    1177711,

    1178711,

    1180811,

    1183811,

    1186811,

    1190911,

    1193911,

    1196911,

    1201021,

    1208021,

    1212121,

    1215121,

    1218121,

    1221221,

    1235321,

    1242421,

    1243421,

    1245421,

    1250521,

    1253521,

    1257521,

    1262621,

    1268621,

    1273721,

    1276721,

    1278721,

    1280821,

    1281821,

    1286821,

    1287821,

    1300031,

    1303031,

    1311131,

    1317131,

    1327231,

    1328231,

    1333331,

    1335331,

    1338331,

    1343431,

    1360631,

    1362631,

    1363631,

    1371731,

    1374731,

    1390931,

    1407041,

    1409041,

    1411141,

    1412141,

    1422241,

    1437341,

    1444441,

    1447441,

    1452541,

    1456541,

    1461641,

    1463641,

    1464641,

    1469641,

    1486841,

    1489841,

    1490941,

    1496941,

    1508051,

    1513151,

    1520251,

    1532351,

    1535351,

    1542451,

    1548451,

    1550551,

    1551551,

    1556551,

    1557551,

    1565651,

    1572751,

    1579751,

    1580851,

    1583851,

    1589851,

    1594951,

    1597951,

    1598951,

    1600061,

    1609061,

    1611161,

    1616161,

    1628261,

    1630361,

    1633361,

    1640461,

    1643461,

    1646461,

    1654561,

    1657561,

    1658561,

    1660661,

    1670761,

    1684861,

    1685861,

    1688861,

    1695961,

    1703071,

    1707071,

    1712171,

    1714171,

    1730371,

    1734371,

    1737371,

    1748471,

    1755571,

    1761671,

    1764671,

    1777771,

    1793971,

    1802081,

    1805081,

    1820281,

    1823281,

    1824281,

    1826281,

    1829281,

    1831381,

    1832381,

    1842481,

    1851581,

    1853581,

    1856581,

    1865681,

    1876781,

    1878781,

    1879781,

    1880881,

    1881881,

    1883881,

    1884881,

    1895981,

    1903091,

    1908091,

    1909091,

    1917191,

    1924291,

    1930391,

    1936391,

    1941491,

    1951591,

    1952591,

    1957591,

    1958591,

    1963691,

    1968691,

    1969691,

    1970791,

    1976791,

    1981891,

    1982891,

    1984891,

    1987891,

    1988891,

    1993991,

    1995991,

    1998991,

    3001003,

    3002003,

    3007003,

    3016103,

    3026203,

    3064603,

    3065603,

    3072703,

    3073703,

    3075703,

    3083803,

    3089803,

    3091903,

    3095903,

    3103013,

    3106013,

    3127213,

    3135313,

    3140413,

    3155513,

    3158513,

    3160613,

    3166613,

    3181813,

    3187813,

    3193913,

    3196913,

    3198913,

    3211123,

    3212123,

    3218123,

    3222223,

    3223223,

    3228223,

    3233323,

    3236323,

    3241423,

    3245423,

    3252523,

    3256523,

    3258523,

    3260623,

    3267623,

    3272723,

    3283823,

    3285823,

    3286823,

    3288823,

    3291923,

    3293923,

    3304033,

    3305033,

    3307033,

    3310133,

    3315133,

    3319133,

    3321233,

    3329233,

    3331333,

    3337333,

    3343433,

    3353533,

    3362633,

    3364633,

    3365633,

    3368633,

    3380833,

    3391933,

    3392933,

    3400043,

    3411143,

    3417143,

    3424243,

    3425243,

    3427243,

    3439343,

    3441443,

    3443443,

    3444443,

    3447443,

    3449443,

    3452543,

    3460643,

    3466643,

    3470743,

    3479743,

    3485843,

    3487843,

    3503053,

    3515153,

    3517153,

    3528253,

    3541453,

    3553553,

    3558553,

    3563653,

    3569653,

    3586853,

    3589853,

    3590953,

    3591953,

    3594953,

    3601063,

    3607063,

    3618163,

    3621263,

    3627263,

    3635363,

    3643463,

    3646463,

    3670763,

    3673763,

    3680863,

    3689863,

    3698963,

    3708073,

    3709073,

    3716173,

    3717173,

    3721273,

    3722273,

    3728273,

    3732373,

    3743473,

    3746473,

    3762673,

    3763673,

    3765673,

    3768673,

    3769673,

    3773773,

    3774773,

    3781873,

    3784873,

    3792973,

    3793973,

    3799973,

    3804083,

    3806083,

    3812183,

    3814183,

    3826283,

    3829283,

    3836383,

    3842483,

    3853583,

    3858583,

    3863683,

    3864683,

    3867683,

    3869683,

    3871783,

    3878783,

    3893983,

    3899983,

    3913193,

    3916193,

    3918193,

    3924293,

    3927293,

    3931393,

    3938393,

    3942493,

    3946493,

    3948493,

    3964693,

    3970793,

    3983893,

    3991993,

    3994993,

    3997993,

    3998993,

    7014107,

    7035307,

    7036307,

    7041407,

    7046407,

    7057507,

    7065607,

    7069607,

    7073707,

    7079707,

    7082807,

    7084807,

    7087807,

    7093907,

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    7215127,

    7226227,

    7246427,

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    7250527,

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    7291927,

    7300037,

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    );

    var

    //b:array[1..10000000] of boolean;

    n,m,i,j:longint;

    {function ss(i:longint):boolean;

    var

    j:longint;

    begin

    ss:=false;

    for j:=2 to trunc(sqrt(i)) do

    if i mod j=0 then

    exit;

    ss:=true;

    end;

    function hw(i:longint):boolean;

    var

    j:longint;

    s:string;

    begin

    str(i,s);

    hw:=false;

    for j:=1 to length(s) div 2 do

    if s[j]s[length(s)-j+1] then

    exit;

    hw:=true;

    end;}

    begin

    read(n,m);

    {for i:=2 to m do

    begin

    if b[i] then

    begin

    for j:=2 to m div 2 do

    b[j*i]:=false;

    end;

    end;}

    for i:=1 to 779 do

    begin

    if (bt[i]=n) then

    writeln(bt[i]);

    end;

    end.

    猥琐之题,留个纪念……

  • 0
    @ 2009-09-19 16:06:50

    打表 ...

  • 0
    @ 2009-09-19 14:15:26

    cheat生成器

    procedure ss;

    var i,n:integer; s : string;

    begin

    assign(input,'d:\123.txt');reset(input);

    assign(output,'d:\1.txt');rewrite(output);

    writeln('var');

    writeln(' a,b : longint;');

    writeln('begin');

    writeln(' readln(a,b);');

    for i := 1 to 779 do

    begin

    readln(s);

    writeln(' if (',s,'>=a) and (',s,'

  • 0
    @ 2009-10-30 22:16:01

    是不是判断素数耗时太多

    ├ 测试数据 01:答案正确... 0ms

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 25ms

    ├ 测试数据 04:答案正确... 40ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:运行超时...

    ├ 测试数据 08:运行超时...

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:运行超时...

    ---|---|---|---|---|---|---|---|-

    Unaccepted 有效得分:70 有效耗时:65ms

    var m,n,i:longint;

    function huiwen(i:longint):boolean;

    var str1:string;

    l,j:integer;

    begin

    huiwen:=false;

    str(i,str1);

    l:=length(str1);

    if l mod 2=0 then begin

    for j:=1 to l div 2 do

    if ord(str1[j])=ord(str1[l+1-j]) then huiwen:=true

    else begin huiwen:=false; exit; end;

    end;

    if l mod 20 then begin

    for j:=1 to (l-1) div 2 do

    if ord(str1[j])=ord(str1[l+1-j]) then huiwen:=true

    else begin huiwen:=false; exit; end;

    end;

    if l=1 then huiwen:=true;

    end;

    function sushu(i:longint):boolean;

    var j:longint;

    begin

    sushu:=true;

    for j:=2 to trunc(sqrt(i)) do

    if (i mod j=0) and (i2) then begin sushu:=false; exit; end;

    if i=1 then sushu:=false;

    end;

    begin

    readln(m,n);

    for i:=m to n do

    if huiwen(i) then if sushu(i) then writeln(i);

    end.

    ---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|-

    var m,n,i,j,l1,l2,s:longint;

    a:array[0..100000] of longint;

    str0:string;

    function sushu(i:longint):boolean;

    var j:longint;

    begin

    for j:=2 to i do

    if j*j>i then exit(true) else

    if (i mod j=0) and (i2) then exit(false);

    exit(true);

    end;

    procedure huiwen;

    var i,k,p,q,j:longint;

    str0,str1:string;

    begin

    fillchar(a,sizeof(a),0);

    for i:=trunc(exp((l1 div 2)*ln(10)))

    to trunc(exp((l2 div 2+1)*ln(10))) do

    begin

    str(i,str0);

    str1:='';

    for j:=1 to length(str0) do str1:=str1+str0[length(str0)-j+1];

    val(concat(str0,str1),q); str1:='';

    if (q>=m)and(q=m)and(qa[j] then

    begin

    a[0]:=a[i];

    a[i]:=a[j];

    a[j]:=a[0];

    end;

    for i:=1 to s do

    writeln(a[i]);

    end.

    编译通过...

    ├ 测试数据 01:答案正确... 0ms

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 0ms

    ├ 测试数据 04:答案正确... 0ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:答案正确... 0ms

    ├ 测试数据 08:答案正确... 0ms

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:答案正确... 0ms

    ---|---|---|---|---|---|---|---|-

    Accepted 有效得分:100 有效耗时:0ms

    原来判断的时候q有可能等于m,或等于n

    结果很奇怪的发现,开大搜索范围,一直都是

    编译通过...

    ├ 测试数据 01:答案错误...程序输出比正确答案长

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 0ms

    ├ 测试数据 04:答案正确... 0ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:运行超时|无输出...

    ├ 测试数据 07:答案错误...程序输出比正确答案长

    ├ 测试数据 08:答案错误... ├ 标准行输出

     ├ 错误行输出

    ├ 测试数据 09:运行超时|无输出...

    ├ 测试数据 10:答案错误...程序输出比正确答案长

    ---|---|---|---|---|---|---|---|-

    Unaccepted 有效得分:40 有效耗时:0ms

    都交了十几次了

    通过率从47%直跌43%

  • 0
    @ 2009-09-17 14:38:19

    var

    a, b, count, f, i, l, n : longint;

    num : int64;

    temp : string;

    ans : array[1 .. 30000] of int64;

    function prime(x : int64) : boolean;

    var

    i : longint;

    begin

    if x = 1 then exit(false);

    for i := 2 to trunc(sqrt(x)) do

      if x mod i = 0 then exit(false);

    prime := true;

    end;

    procedure swap(var a, b : int64);

    var

    temp : int64;

    begin

    temp := a;

    a := b;

    b := temp;

    end;

    procedure sort(l, r : longint);

    var

    i, j, mid : longint;

    begin

    i := l;

    j := r;

    mid := ans[(i + j) div 2];

    repeat

      while ans[i] < mid do inc(i);

      while ans[j] > mid do dec(j);

      if i j;

    if l < j then sort(l, j);

    if i < r then sort(i, r);

    end;

    begin

    readln(a, b);

    n := 0;

    str(b, temp);

    l := length(temp) div 2;

    f := 1;

    for i := 1 to l do f := f * 10;

    for i := 1 to f - 1 do

    begin

      num := i div 10;

      count := i;

      repeat

       num := num * 10 + count mod 10;

       count := count div 10;

      until count = 0;

      if (num >= a) and (num = a) and (num = a) and (num 0 then sort(1, n);

    for i := 1 to n do writeln(ans[i]);

    end.

  • 0
    @ 2009-09-17 13:11:13

    不打表,不优化,直接过,数据弱:

    编译通过...

    ├ 测试数据 01:答案正确... 0ms

    ├ 测试数据 02:答案正确... 0ms

    ├ 测试数据 03:答案正确... 0ms

    ├ 测试数据 04:答案正确... 0ms

    ├ 测试数据 05:答案正确... 0ms

    ├ 测试数据 06:答案正确... 0ms

    ├ 测试数据 07:答案正确... 0ms

    ├ 测试数据 08:答案正确... 0ms

    ├ 测试数据 09:答案正确... 0ms

    ├ 测试数据 10:答案正确... 0ms

    ---|---|---|---|---|---|---|---|-

    Accepted 有效得分:100 有效耗时:0ms

    var

    a, b, count, f, i, l, n : longint;

    num : int64;

    temp : string;

    ans : array[1 .. 30000] of int64;

    function prime(x : int64) : boolean;

    var

    i : longint;

    begin

    if x = 1 then exit(false);

    for i := 2 to trunc(sqrt(x)) do

    if x mod i = 0 then exit(false);

    prime := true;

    end;

    procedure swap(var a, b : int64);

    var

    temp : int64;

    begin

    temp := a;

    a := b;

    b := temp;

    end;

    procedure sort(l, r : longint);

    var

    i, j, mid : longint;

    begin

    i := l;

    j := r;

    mid := ans[(i + j) div 2];

    repeat

    while ans[i] < mid do inc(i);

    while ans[j] > mid do dec(j);

    if i j;

    if l < j then sort(l, j);

    if i < r then sort(i, r);

    end;

    begin

    readln(a, b);

    n := 0;

    str(b, temp);

    l := length(temp) div 2;

    f := 1;

    for i := 1 to l do f := f * 10;

    for i := 1 to f - 1 do

    begin

    num := i div 10;

    count := i;

    repeat

    num := num * 10 + count mod 10;

    count := count div 10;

    until count = 0;

    if (num >= a) and (num = a) and (num = a) and (num 0 then sort(1, n);

    for i := 1 to n do writeln(ans[i]);

    end.

信息

ID
1042
难度
7
分类
搜索 | 搜索与剪枝 点击显示
标签
(无)
递交数
6601
已通过
1521
通过率
23%
被复制
13
上传者