#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    string s;
    int cnt = 0;
    while(cin >> s){
        cnt++;
    }
    if(cnt >= 2) return 1;
    cout << "Yes\n";
}