Cod sursa(job #1693112)
Utilizator | Feraru Mihail LittleWho | Data | 22 aprilie 2016 13:58:13 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.6 kb |
#include <iostream>
#include <fstream>
#include <algorithm>
#include <vector>
using namespace std;
long long logpow(long long n, long long p, long long div)
{
int res = 1;
for (int i = 0; (1<<i) <= p; ++i) {
if (((1 << i) & p) > 0) {
res *= n;
res %= div;
}
n *= n;
n %= div;
}
return res;
}
int main()
{
ifstream in("lgput.in");
ofstream out("lgput.out");
long long n, p;
in >> n >> p;
long long res = logpow(n, p, 1999999973);
out << res << "\n";
in.close();
out.close();
return 0;
}