Cod sursa(job #1326064)
Utilizator | Data | 24 ianuarie 2015 17:39:04 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.42 kb |
#include<fstream>
#include<iostream>
#define q 1999999973
using namespace std;
ifstream in("lgput.in");
ofstream out("lgput.out");
int n,p;
int putere(int n, int p);
int main()
{
in>>n>>p;
out<<putere(n,p);
}
int putere(int n, int p)
{
if(n==1) return 1;
if(n==0) return 0;
if(p==1) return n;
if(p==0) return 1;
if(n^1) return putere((1ll*n*n)%q,p>>1);
return (1ll*n*putere((1ll*n*n)%q,(p-1)>>1)%q);
}