Submission #791410

#	Time	Username	Problem	Language	Result	Execution time	Memory
791410		ttamx	Star Trek (CEOI20_startrek)	C++14	7 / 100	1 ms	212 KiB

startrek

#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

const int N=1e5+5;
const ll mod=1e9+7;

ll binpow(ll a,ll b){
    ll res=1;
    while(b>0){
        if(b&1)res*=a,res%=mod;
        a*=a,a%=mod;
        b>>=1;
    }
    return res;
}

int n;
ll d;

int main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n >> d;
    cout << binpow(4,d);
}

• Subtask 1: 0 / 0
• Subtask 2: 7 / 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