Submission #1101249

#	Time	Username	Problem	Language	Result	Execution time	Memory
1101249		fve5	Star Trek (CEOI20_startrek)	C++17	0 / 100	1 ms	340 KiB

startrek

#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 = 2;
  long long a = 1;
  do {
    if (D & 1) a = a * b % MOD;
    b = b * b % MOD;
  } while (D >>= 1);
  
  cout << a << '\n';
}

• Subtask 1: 0 / 0
• Subtask 2: 0 / 7
• Subtask 3: 0 / 8
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 15