C++ 代码

#include <cstdio>
#include <cstring>
#include <iostream>
#include <algorithm>
#include <string>
using namespace std;
int months[]={0,31,28,31,30,31,30,31,31,30,31,30,31};
bool judge(int fi){
    int year = fi/10000;
    int month = fi/100%100;
    int day = fi%100;
    if(month<=0||month>12) return false;
    if(day==0 || ( month!=2&&day>months[month] ) ) return false;
    if(month == 2){
        int leap=0;
        if( (year%4==0 && year%100!=0) || year%400==0) leap=1;
        if(day > 28+leap) return false;
    }
    return true;
}

int main(){
    int  n,ans1=0,ans2=0;
    cin >> n;
    for(int i=n+1; i<=899912310; i++){
        if(!judge(i)) continue;
        int temp =i;
        int fi =0;//翻转 
        while(temp){
            int t = temp % 10;
            fi = fi*10 + t;
            temp /= 10;
        }
        if(i==fi){  
            if(ans1==0) ans1 = i;
            if(i%10==i/100%10 && i/10%10==i/1000%10 && i%10!=i/10%10){
                ans2=i;
                break;
            }
        }
    }
    cout<<ans1<<endl<<ans2<<endl;
    return 0; 
}