问题标题: KDT:请问酷町堂1726这道题我哪里做错了?

https://ke.codingtang.com/#/problem/problemSub?id=1726

这是我的代码，请问哪里错了?

#include <iostream>
#include <cstdio>
#include <string>
#include <cmath>
#include <algorithm>
#include <fstream>

using namespace std;
int x, y, ans;

int main() {
    //freopen("文件名.in","r",stdin);
    //freopen("文件名.out","w",stdout);
    cin >> x >> y;
    int k = 1;
    bool b = true, s = false;
    while (true) {
        if (b) {
            int cnt_1 = 0;
            for (int i = x; i <= x+k; i++) {
                ans++;
                cnt_1++;
                if (i == y) {
                    cout << ans;
                    return 0;
                }
            }
            k = k* 2;
            b = false;
            s = true;
            ans += cnt_1;
        }
        if (s) {
            int cnt_2 = 0;
            for (int i = x; i>=x-k;i--) {
                ans++;
                cnt_2++;
                if (i == y) {
                    cout << ans;
                    return 0;
                }
            }
            k = k * 2;
            b = true;
            s = false;
            ans += cnt_2;
        }
    }
    //fclose(stdin);
    //fclose(stdout);
    return 0;
}