python/TangDou/AoSaiYiBenTong/YBT1042.cpp

#include <bits/stdc++.h>

using namespace std;

int main() {
    //cin读入优化
    std::ios::sync_with_stdio(false);

    char c;
    cin >> c;

    int n = c;
    if (n % 2 == 1) cout << "YES";
    else
        cout << "NO";
    return 0;
}