제출 #1101250

#제출 시각아이디문제언어결과실행 시간메모리
1101250fve5Star Trek (CEOI20_startrek)C++17
7 / 100
1 ms500 KiB
    #include <bits/stdc++.h>
    using namespace std;
     
    constexpr int MOD = 1e9 + 7;
     
    int main() {
      int N; cin >> N;
      long long D; cin >> D;
      
      long long b = 4;
      long long a = 1;
      do {
        if (D & 1) a = a * b % MOD;
        b = b * b % MOD;
      } while (D >>= 1);
      
      cout << a << '\n';
    }
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