#include <iostream>
#include <cstdio>
using namespace std;

int main(void){
	int n, m, c; cin >> n >> m >> c;
	if(n == 1){
		if(c == 1 || c == m){
			printf("YES\n"); return 0;
		}else{
			printf("NO\n"); return 0;
		}
	}
	if(m == 1){
		if(c == 1 || c == n){
			printf("YES\n"); return 0;
		}else{
			printf("NO\n"); return 0;
		}
	}
	
	if((n * m) % 2 == 0){
		printf("YES\n");
		return 0;
	}
	printf("NO\n");
	return 0;
}