#include <bits/stdc++.h>
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define UNIQUE(v) v.erase( unique(v.begin(), v.end()), v.end() );
using namespace std;
using ll = long long;

int main(){
    int y, m, d;
    cin >> y >> m >> d;

    bool ok = false;
    if(1989 < y && y < 2019) ok = true;
    else if(y == 1989 && 1 < m) ok = true;
    else if(y == 1989 && m == 1 && 8 <= d) ok = true;
    else if(y == 2019 && m < 4) ok = true;
    else if(y == 2019 && m == 4 && d <= 30) ok = true;

    if(ok) cout << "Yes" << endl;
    else cout << "No" << endl;
}