#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;
x%=mod;
cout << pow(a,x);
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
1716 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |