#include <iostream>
using namespace std;
int main() {
int a, b, c;
cin >> a >> b >> c;
((((a % 2) == 0) or ((b % 2) == 0) or ((c % 2) == 0)) and (((a % 2) !=0) or ((b % 2) != 0) or ((c % 2) !=0))) ? cout << "YES" : cout << "NO";
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwogCmludCBtYWluKCkgewoJaW50IGEsIGIsIGM7CgljaW4gPj4gYSA+PiBiID4+IGM7CiAgICAoKCgoYSAlIDIpID09IDApIG9yICgoYiAlIDIpID09IDApIG9yICgoYyAlIDIpID09IDApKSBhbmQgKCgoYSAlIDIpICE9MCkgb3IgKChiICUgMikgIT0gMCkgb3IgKChjICUgMikgIT0wKSkpID8gY291dCA8PCAiWUVTIiA6IGNvdXQgPDwgIk5PIjsKCXJldHVybiAwOwp9