#include <cstdio>

int n, m, k;
bool f;

int main(){
	scanf("%d %d %d", &n, &m, &k);
	for(int i=0; i<=n; ++i)
		for(int j=0; j<=m; ++j)
			if(i * m + j * n - 2 * i * j == k) f = true;
	if(f) printf("Yes\n");
	else printf("No\n");
}