Cod sursa(job #1656327)
Utilizator | Data | 19 martie 2016 10:09:09 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.41 kb |
#include <cstdio>
using namespace std;
long long int putere_log(int x,int n)
{
long long int p=1;
while(n>0)
{
if(n&1)
{
p*=x;
n--;
}
x=x*x;
n>>=1;
}
return p;
}
int main()
{
int a,b;
fscanf(fopen("lgput.in","r"),"%d %d ",&a,&b);
fprintf(fopen("lgput.out","w"),"%lld\n",putere_log(a,b));
return 0;
}