# -*- coding: utf-8 -*-
"""
No.85 TVザッピング(1)
https://yukicoder.me/problems/no/85

"""
import sys
from sys import stdin
input = stdin.readline


def main(args):
    N, M, C = map(int, input().split())
    if (N % 2 == 1 and M % 2 == 1) or (N == 1 or M == 1):
        print('NO')
    else:
        print('YES')


if __name__ == '__main__':
    main(sys.argv[1:])