比那快

#include <bits/stdc++.h>
using namespace std;

int main() {
double n;
int m;
cin >> n >> m;
double a = n - floor(n);
int d = 0;
for(int i = 1; i <= m ; i++){
a = a * 2;
d = floor(a); //取整
a = a - floor(a); //舍去整数部分
}
cout << d;
return 0;
}