题解 | 二进制不同位数

#include <stdio.h>

int main(void) {
    int m, n;
    scanf("%d%d", &m, &n);

    int count = 0;
    while(m || n){
        int a = m&1;
        int b = n&1;
        if(a != b)
            count++;
        m >>= 1, n >>= 1;
    }
    printf("%d", count);
    return 0;
}