#include <bits/stdc++.h>
int main() {
  int a, b, c;
  scanf("%d %d %d", &a, &b, &c);
  if ((a + b) % 2 == 0)
    puts("YES");
  else if ((b + c) % 2 == 0)
    puts("YES");
  else if ((a + c) % 2 == 0)
    puts("YES");
  else
    puts("NO");
  return 0;
}
