Submission #703379

#	Time	Username	Problem	Language	Result	Execution time	Memory
703379		Darren0724	Star Trek (CEOI20_startrek)	C++17	0 / 100	1 ms	300 KiB

startrek

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int mod=1e9+7;
int pw(int a,int b){
    int ans=1;
    while(b){
        if(b&1){
            ans=ans*a%mod;
        }
        b>>=1;
        a=a*a%mod;
    }
    return ans;
}
signed main(){
    int n;cin>>n;
    if(n==2){
        int d;cin>>d;
        int p=pw(2,d*2-1);
        cout<<p<<endl;
    }
    return 0;
}

• 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