Cod sursa(job #2227624)
Utilizator | Pascu Ionut Alexandru AlexPascu007 | Data | 1 august 2018 11:15:03 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.45 kb |
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long putere(long long a, long long b) {
if (b<0)
return putere(1/a,-b);
else if (b==0)
return 1;
else if (b==1)
return a;
else if (b%2==0)
return (putere(a*a, b/2))%1999999973;
else if (b%2==1)
return a*(putere(a*a, (b-1)/2))%1999999973;
}
long long n,p;
int main() {
fin>>n>>p;
fout<<putere(n,p)%1999999973;
return 0;
}