Cod sursa(job #1514873)
Utilizator | Data | 31 octombrie 2015 19:15:55 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.45 kb |
#include <fstream>
using namespace std;
int ridicare(int x, int p)
{
if (p==0)
return 1;
else
if (p==1)
return x ;
else
if(p%2==0)
{
return ridicare(x*x, p/2);
}
else
return x*ridicare(x*x, (p-1)/2);
}
int main()
{
int n, p;
ifstream g ("lgput.in");
ofstream h ("lgput.out");
g>>n>>p;
h<<ridicare(n, p);
return 0;
}