#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{ 
    while(1){
    int y,m,d;
    int mon[12]={31,28,31,30,31,30,31,31,30,31,30,31};
    int n,N;
    cin>>y>>m>>d;
......................