제출 #448754

#제출 시각아이디문제언어결과실행 시간메모리
448754UltraFalconRack (eJOI19_rack)C++17
40 / 100
1 ms312 KiB
#include <bits/stdc++.h> #define int long long using namespace std; signed main() { ios_base::sync_with_stdio(false); cin.tie(0); const int limit = (1e9) + 7; int n, k; cin >> n >> k; k--; int i = n-1; int r = 1; while (i >= 0) { if (k % 2 == 1) { r = (r + (1 << i)) % limit; } k /= 2; i--; } cout << r << "\n"; }
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