- 数的计数(加强版)
-
wangzhongtao LV 9 @ 2014-12-06 14:03:39
#include<iostream>
#include<string>
using namespace std;
string add(string sa,string sb)
{
string sc;
int a[10000],b[10000],c[10000];
int i,j,x,lena,lenb,lenc;
lena=sa.size();
for (i=0,j=lena;i<lena;i++,j--)
a[j]=int(sa[i])-48;
lenb=sb.size();
for (i=0,j=lenb;i<lenb;i++,j--)
b[j]=int(sb[i])-48;
i=1; x=0;
while (i<=lena || i<=lenb)
{
c[i]=a[i]+b[i]+x;
x=c[i]/10;
c[i]%=10;
i++;
}
if (x>0)
{
lenc=i;
c[i]=x;
}
else lenc=i-1;
for (i=lenc;i>=1;i--)
sc+=char(c[i]+48);
return sc;
}
int main()
{
ios::sync_with_stdio(false);
string s[100000];
long n,i;
cin>>n;
s[1]="1";
for (i=2;i<=n;i++)
{
if (i%2==1) s[i]=s[i-1];
else
s[i]=add(s[i-1],s[i/2]);
}
cout<<s[n];
return 0;
}
5 条评论
-
xgc LV 9 @ 2015-08-03 23:21:36
hhh
-
@ 2015-07-13 09:49:37
哪位大牛帮忙看看，谢谢
var
a:longint;
m:array[1..3000000]of string;
function add(a,b:string):string;
var
s:string;
bp,ch,i,p,j:longint;
ap,bk,k:array[1..50]of longint;
begin
fillchar(ap,sizeof(ap),0);
fillchar(bk,sizeof(bk),0);
fillchar(k,sizeof(k),0);
if length(a)>length(b) then
begin
bp:=length(a);
j:=length(b)+1;
ch:=bp-length(b);
for i:=2 to bp+1 do val(a[i-1],ap[i],p);
for i:=bp+1 downto ch+1 do
begin
dec(j);
val(b[j],bk[i],p);
end;
end else
begin
if length(a)<length(b) then
begin
j:=length(a)+1;
bp:=length(b);
ch:=bp-length(a);
for i:=2 to bp+1 do val(b[i-1],bk[i],p);
for i:=bp+1 downto ch+1 do
begin
dec(j);
val(a[j],ap[i],p);
end;
end else
begin
bp:=length(b);
for i:=2 to bp+1 do
begin
val(b[i-1],bk[i],p);
val(a[i-1],ap[i],p);
end;
end;
end;
for i:=bp+2 downto 2 do
begin
k[i]:=bk[i]+ap[i];
while k[i]>9 do
begin
k[i]:=k[i]-10;
inc(k[i-1]);
end;
end;
for i:=bp+1 downto 1 do
begin
str(k[i],s);
add[i]:=s[1];
end;
if add[1]='0' then delete(add,1,1);
end;
function dg(n:longint):string;
var i:longint;begin
i:=0;
if n=a then dg:='1';
if n=1 then
begin
dg:='1';
m[1]:='1';
end else
begin
for i:=1 to n div 2 do
begin
if m[i]='0'then dg:=add(dg,dg(i))else dg:=add(dg,m[i]);
end;
m[n]:=dg;
end;
end;
begin
fillchar(m,sizeof(m),'0');
m[1]:='1';
readln(a);
if a mod 2=1 then dec(a);
writeln(dg(a));
end. -
@ 2015-04-22 12:18:15
请正确地发布源代码
-
@ 2014-12-09 17:15:48
?..................
-
@ 2014-12-06 21:48:33
请正确地发布源代码
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