Cod sursa(job #1852823)
Utilizator | Data | 21 ianuarie 2017 10:54:20 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.48 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
int pow(int x, int p)
{
int rez, r;
rez = 1;
r = 1999999973;
while(p)
{
if(p % 2 == 1)
{
rez = rez * x;
rez %= r;
}
x = x * x;
x%=r;
p/=2;
}
return rez;
}
int main()
{
int x, p;
fin >> x >> p;
fout << pow(x, p);
return 0;
}