Cod sursa(job #2755876)
Utilizator | Nastasa Stefan-Alexandru RedPipper | Data | 28 mai 2021 17:12:49 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.47 kb |
#include <fstream>
#define MODULO 1999999973
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long n, p;
int exp(int x, int n){
if(n < 0)return exp(1/x, -n)%MODULO;
if(n==0)return 1;
if(n==1)return x%MODULO;
if(n%2==0)return exp(x*x, n/2)%MODULO;
if(n%2==1)return x * exp(x*x, (n-1)/2)%MODULO;
return -1;
}
int main(){
//ridicare in timp logaritmic
fin>>n>>p;
fout<<exp(n,p)%MODULO;
return 0;
}