Cod sursa(job #2306144)
Utilizator | Data | 21 decembrie 2018 17:57:41 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.47 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
long long ridicarelaputere(long long a,long long b)
{
long long p = 1;
while (b > 0)
{
if (b%2==1)
{
p *= a;
b--;
}
a = a * a;
b /= 2;
}
return p;
}
int main()
{
long long a, b;
fin >>a >> b;
fout << ridicarelaputere(a,b);
return 0;
}