poj 3219 Binomial Coefficients

#include<stdio.h>int main(){int a, b;while (scanf("%d%d", &a, &b) == 2) {printf("%dn", (a - b) & b ? 0 : 1);continue;int c = a - b;int x = 0, y = 0, z = 0;while (a = a >> 1) {x += a;}while (b = b >> 1) {y += b;}while (c = c >> 1) {z += c;}if (x - y > z) printf("0n");else printf("1n");}    return 0;}