题解 | #打印日期#

#include <iostream>
using namespace std;

int main() {
     int y = 0;
     int n = 0;
     int array[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
     
     while(cin >> y >> n)
     {
        if(((y%4==0) && (y%100 !=0)) || (y % 400 == 0))
        {
            array[2] = 29;
        }
        for(int i = 1;i < 13;++i)
        {
            if(n > array[i])
            {
                n -= array[i];
            }
            else {
                printf("%04d-%02d-%02d\n",y,i,n);
                break;
            }
        }
        array[2] = 28;
    }
     return 0;
}