Cod sursa(job #404896)
| Utilizator | Data | 26 februarie 2010 21:17:47 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.47 kb |
#include<fstream.h>
#define rest 1999999973
long long n;
long long calcul (long long p)
{
long long nr;
if (p==1)
return n; else
if (p%2==1)
{
nr=calcul((p-1)/2);
return (n*((nr*nr)%rest))%rest;
} else
{
nr=calcul(p/2);
return (nr*nr)%rest;
}
}
int main()
{
long long p;
ifstream fin("lgput.in");
fin>>n>>p;
ofstream fout("lgput.out");
fout<<calcul(p);
fin.close();
fout.close();
return 0;
}