Submission #19497

#	Time	Username	Problem	Language	Result	Execution time	Memory
19497		min050820	Α (kriii4_P1)	C++14	100 / 100	0 ms	1716 KiB

P1

#include <iostream>

using namespace std;

long long a,x;

const long long mod=1000000007;

// dp[n] = N ^ (2^n)
long long pow_dpTable[100];

long long pow(long long N,long long P){
    pow_dpTable[0]=N;
    long long mask=1;
    long long result=1;
    int i;
    for(i=1;mask <= P;i++){
        pow_dpTable[i]=(pow_dpTable[i-1] * pow_dpTable[i-1])%mod;
        mask<<=1;
    }
    mask=1;
    for(i=0;mask <= P;i++){
        if(P&mask){
            result = (result * pow_dpTable[i]) % mod;
        }


        mask<<=1;
    }

    return result;
}

int main()
{
    cin >> a >> x;
    a%=mod;
    cout << pow(a,x);
    return 0;
}

• Subtask 1: 100 / 100