Cod sursa(job #750381)
| Utilizator | Data | 21 mai 2012 23:09:25 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.48 kb |
#include<iostream>
#include<fstream>
#define MOD 1999999973
using namespace std;
fstream f("lgput.in",ios::in), g("lgput.out",ios::out);
long long putere(int a, int b, int m);
int main()
{
int a,b;
long long af;
f>>a>>b;
af=putere(a,b,MOD);
g<<af;
return 0;
}
long long putere(int a, int b, int m)
{
if(b==1)
return a;
if(b==0)
return 1;
long long rez=1;
rez=putere(a,b/2,m);
rez=(rez*rez)%m;
if (b%2) // b - impar
rez*=a;
return rez%m;
}