Cod sursa(job #2562430)
Utilizator | Data | 29 februarie 2020 14:19:26 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.42 kb |
#include <bits/stdc++.h>
using namespace std;
ifstream in("lgput.in");
ofstream out("lgput.out");
int lgput(int x, int n)
{
if(n<0)
return lgput(1/x,-n);
if(n==0)
return 1;
if(n==1)
return x;
if(n%2==0)
return lgput(x*x,n/2);
if(n%2!=0)
return x*lgput(x*x,(n-1)/2);
}
int main()
{
int n,m;
in>>n>>m;
out<<lgput(n,m);
return 0;
}