#include<stdio.h>

int m,n;

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

int isLeapYear(int y){

    if((y%4==0&&y%100!=0)||y%400==0)

    {

        return 1;

    }

    else

        return 0;

}

void solve()

{

    int i=1;

    while(n>month[i])

    {

        n-=month[i];

        i++;

    }

    printf("%04d-%02d-%02d\n",m,i,n);

}

int main(int argc, char *argv[])

{

    while(~scanf("%d%d",&m,&n))

    {

        if(isLeapYear(m)){

            month[2]++;

            solve();

            month[2]--;

        }

        else

            solve();

    }

    return 0;

}

注意输出格式的问题