int main() { int n = 0; int m = 0; int x = 0; int y = 0; int count = 0; scanf("%d %d",&n,&m); for (int i = 0; i < 32; i++) { x = n % 2; n = n / 2; y = m % 2; m = m / 2; if (x != y) { count++; } } printf("%d",count); return 0; }