Cod sursa(job #1346271)
Utilizator | Data | 18 februarie 2015 09:31:21 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.44 kb |
#include <fstream>
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
long long x;
long long n, p;
int putere(long long a, long long b)
{
long long ret=1, aux=a;
long long i;
for(i=1;i<=b;i=i<<1)
{
if(i&b) ret=(ret*aux);
aux=aux*aux;
ret%1999999973;
aux%1999999973;
}
return ret;
}
int main ()
{
f>>n>>p;
g<<putere(n,p);
return 0;
}