Cod sursa(job #352549)
Utilizator | Teodor Plop Teodor94 | Data | 2 octombrie 2009 11:44:41 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.38 kb |
#include <cstdio>
const int M=1999999973;
int pow(int a,int n)
{
if (n==0) return 1;
if (n&1) // n%2=1;
return (int)((long long)a*pow((long long)a*a%M,n>>1)%M); // n>>1 = n=n/2;
return pow((long long)a*a%M,n>>1);
}
int n,p;
int main()
{
freopen("lgput.in","r",stdin);
freopen("lgput.out","w",stdout);
scanf("%d%d",&n,&p);
printf("%d",pow(n,p));
}