C语言 每日一题 牛客网 11.13 Day17

    int main() {
        int n = 0;
        int res = 0;
        scanf("%d", &n);
        int data = 1024 - n;
        char coins[4] = { 64,16,4,1 };
        int cur = 0;
        for (cur = 0; data > 0 && cur < 4; ) {
            if (data >= coins[cur]) {
                data = data - coins[cur];
                res++;
            }
            else {
                cur++;
            }
        }
        printf("%d", res);
        return 0;
    }