CE 求调！

#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main(){
	int k, n;
	cin >> k >> n;
	string ans = "";
	while (n){
		ans = char(n % 2 + '0') + ans;
		n /= 2;
	}
	int pos = 0, cnt = 0;
	for (int i = ans.size() - 1; i >= 0; i--)
		cnt += int(pow(k, pos++)) * (ans[i] - 48);
	cout << cnt;
	return 0;
}