Cod sursa(job #645847)
| Utilizator | Data | 10 decembrie 2011 17:00:58 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 0 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.59 kb |
#include<stdio.h>
void citire(int *p,int *n)
{
scanf("%i",p);
scanf("%i",n);
}
int ridic_la_putere(int x,int n)
{
if(n==0)
return 1;
if(n%2==0)
{
int val = ridic_la_putere(x,n/2);
return val*val;
}
else
{
int val = ridic_la_putere(x,(n-1)/2);
return x*val*val;
}
}
int main()
{
int x,putere;
freopen("numar.in","r",stdin);
citire(&x,&putere);int aux=x;
printf("%i",ridic_la_putere(x,putere));
/*for(int i=2;i<=putere;i++)
x*=aux;
printf("%i",x);*/
return 0;
}
