Submission #466147

#	Time	Username	Problem	Language	Result	Execution time	Memory
466147		ohasanov	Rack (eJOI19_rack)	C++17	100 / 100	5 ms	312 KiB

rack

#include "bits/stdc++.h"
using namespace std;
#define int long long
const int mod = 1000000007;
int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n,k;
    cin >> n >> k;
    k--;
    int ans = 0;
    for (int i = 0; i < n; i++) {
        ans = ans * 2;
        ans = ans + k % 2;
        ans = ans % mod;
        k = k / 2;
    }
    ans++;
    ans %= mod;
    cout << ans << endl;
    return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 60 / 60