#include<iostream>
#include<string>
using namespace std;
bool isLeapYear(int y){
    return (y % 400==0)||(y % 4==0 && y % 100!=0);
}
int main(){
    int y,m,d;
    char c1,c2;
    cin>>y>>c1>>m>>c2>>d;
    if(c1 !='-'||c2!='-'||y<1900||y>2100||m<1||m>12){
        cout<<"Invalid input";
        return 0;
    }
    in days[]={31,28,31,30,31,30,31,31,30,31,30,31};
    if(leap(y))days[1]=29;
    if(d<1||d>days[m-1]){
        cout<<"Invalid input";
        return 0;
    }
    int ans =d;
    for(int i=0;i<)
    }
}