Cod sursa(job #1492547)
| Utilizator | Data | 27 septembrie 2015 21:08:50 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.46 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream c("lgput.in");
ofstream f("lgput.out");
long long n,p;
int exp_rapida(long long n,long long p)
{
if(p<0) return exp_rapida(1/n,-p);
else if(p==0) return 1;
else if(p==1) return n;
else if(p%2==0) return exp_rapida((n*n)%1999999973,p/2);
else if(p%2!=0) return n*exp_rapida((n*n)%1999999973,(p-1)/2);
}
int main()
{ c>>n>>p;
f<<exp_rapida(n,p);
return 0;
}
