#include <bits/stdc++.h>

using namespace std;

int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};

int main()
{
int n,m;
int sum=0;
cin>>n>>m;
n/=10000;
m/=10000;
int i;
for(i=n;i<=m;i++)
{
int s=i%10*1000+i%100/10*100+i%1000/100*10+i/1000;
if(s/100<=12&&s%100<=a[s/100])
{
sum++;
}
if(i=9220)
{
sum++;
}

}
cout<<sum<<endl;
return 0;
}

foo.cpp: In function 'int main()':
foo.cpp:17:9: warning: unused variable 'i' [-Wunused-variable]
int i,j,k,l=0,n,m;
^
foo.cpp:17:11: warning: unused variable 'j' [-Wunused-variable]
int i,j,k,l=0,n,m;
^
测试数据 #0: Accepted, time = 0 ms, mem = 732 KiB, score = 10
测试数据 #1: Accepted, time = 0 ms, mem = 732 KiB, score = 10
测试数据 #2: Accepted, time = 0 ms, mem = 732 KiB, score = 10
测试数据 #3: Accepted, time = 0 ms, mem = 732 KiB, score = 10
测试数据 #4: Accepted, time = 0 ms, mem = 732 KiB, score = 10
测试数据 #5: Accepted, time = 0 ms, mem = 736 KiB, score = 10
测试数据 #6: Accepted, time = 0 ms, mem = 732 KiB, score = 10
测试数据 #7: Accepted, time = 15 ms, mem = 732 KiB, score = 10
测试数据 #8: Accepted, time = 93 ms, mem = 732 KiB, score = 10
测试数据 #9: Accepted, time = 156 ms, mem = 732 KiB, score = 10
Accepted, time = 264 ms, mem = 736 KiB, score = 100
代码
#include <bits/stdc++.h>
using namespace std;

bool hw(int a)
{
int x[11];
for(int i=0;i<8;a/=10,i++) {
x[i]=a%10;
}
for(int i=0,j=7;i<4;i++,j--) {
if(x[i]!=x[j]) return 0;
}
return 1;
}
int main()
{
int i,j,k,l=0,n,m;
cin>>n>>m;
int x=n;
for(;x<=m;) {
bool run=false;
if(x/10000%400==0||(x/10000%100!=0&&x/10000%4==0)) run=true;
short flag;
k=x/100%100;
if(k==1||k==3||k==5||k==7||k==8||k==10||k==12) flag=2;
else if(k==2) {
if(run) flag=0;
else {
flag=-1;
}
}
else flag=1;
if(flag==2&&x%100==32) x+=69;
else if(flag==1&&x%100==31) x+=70;
else if(flag==0&&x%100==30) x+=71;
else if(flag==-1&&x%100==29) x+=72;
k=x/100%100;
if(k==13) x=x+8800;
if(hw(x)) l++;
x++;
}
cout<<l<<endl;
return 0;
}

#include <bits/stdc++.h>
using namespace std;

bool hw(int a)
{
int x[11];
for(int i=0;i<8;a/=10,i++) {
x[i]=a%10;
}
for(int i=0,j=7;i<4;i++,j--) {
if(x[i]!=x[j]) return 0;
}
return 1;
}
int main()
{
int i,j,k,l=0,n,m;
cin>>n>>m;
int x=n;
for(;x<=m;) {
bool run=false;
if(x/10000%400==0||(x/10000%100!=0&&x/10000%4==0)) run=true;
short flag;
k=x/100%100;
if(k==1||k==3||k==5||k==7||k==8||k==10||k==12) flag=2;
else if(k==2) {
if(run) flag=0;
else {
flag=-1;
}
}
else flag=1;
if(flag==2&&x%100==32) x+=69;
else if(flag==1&&x%100==31) x+=70;
else if(flag==0&&x%100==30) x+=71;
else if(flag==-1&&x%100==29) x+=72;
k=x/100%100;
if(k==13) x=x+8800;
if(hw(x)) l++;
x++;
}
cout<<l<<endl;
return 0;
}

渣渣一群/中指

#include<stdio.h>
int r(int x)
{
int digit;
int ret = 0;

while ( x> 0 ) {
digit = x%10;
ret = ret*10 + digit;
x /= 10;
}
return ret;
}
int n(int x){
int y=x/10000;
int m=(x % 10000)/100;
x=x % 100;
int d;
switch (m){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: d=31;break;
case 4:
case 6:
case 9:
case 11: d=30;break;
default :
if ((y%4==0)&&(y%100!=0)||(y%400==0)) d=29;
else d=28;
}
if ((0<m)&&(m<13)&&(x<=d)) return 1;
else return 0;
}
int main(){
int d1,d2;
scanf("%d %d",&d1,&d2);
int s=0;
for (int i=d1/10000;i<=d2/10000;i++){
int x=10000*i+r(i);
if ((n(x))&&(x>=d1)&&(x<=d2)) {
s++;
}
}
printf("%d",s);
}

重要的事情说三遍！不用枚举！不用枚举！不用枚举！！！！！！
#include<bits/stdc++.h>
using namespace std;
int mon[13]={-1,31,28,31,30,31,30,31,31,30,31,30,31};
int main()
{
int d1,d2,f=0;
cin>>d1>>d2;
int y1=d1/10000;
int y2=d2/10000;
int sum=0;
for(int i=y1;i<=y2;i++)
{
int d=i*10000+i%10*1000+i%100/10*100+i%1000/100*10+i%10000/1000;
int m=d%10000/100;
int day=d%100;
if(m>=1&&m<=12)
{
if(day>=1&&day<=mon[m])sum++;
}
if(i==9220)sum++;
}
cout<<sum<<endl;
return 0;
}