Cod sursa(job #1337426)
Utilizator | Data | 8 februarie 2015 23:38:15 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.41 kb |
#include <fstream>
using namespace std;
#define MOD 1999999973LL
long long n, p, x;
ifstream f("lgput.in");
ofstream g("lgput.out");
void compute()
{
x = n;
while (p > 1)
{
if (p % 2 == 1)
{
x = (x *x) % MOD * n % MOD;
p = (p - 1) / 2;
}
else
{
x = (x * x) % MOD;
p /= 2;
}
}
g << x;
}
int main()
{
f >> n >> p;
compute();
f.close();
g.close();
}