Cod sursa(job #2671011)
Utilizator | Data | 11 noiembrie 2020 10:58:41 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.47 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.in");
int puteri(int x, int n)
{
if(n==0)
{
return 1;
}
else if(n==1)
{
return x;
}
else if(n%2==0)
{
return puteri(x*x, n/2);
}
else if(n%2==1)
{
return x*puteri(x*x, (n-1)/2);
}
}
int main()
{
int n, x;
f>>x>>n;
g<<puteri(x, n);
return 0;
}