Cod sursa(job #2160337)
| Utilizator | Data | 11 martie 2018 12:33:27 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.5 kb |
#include <iostream>
#include <fstream>
#define inf 1999999973
using namespace std;
ifstream fin("lgput.in");
ofstream fout("lgput.out");
int lgput(int n, int b, int p)
{
int A = n;
int rez = 1;
for(int i = 0; (1<<i) <= b; i++)
{
if(((1<<i) & b) > 0)
{
rez = 1LL * (rez * A) % p;
}
A = 1LL * (A * A) % p;
}
return rez;
}
int main()
{
int n, p, b;
fin >> n >> p;
fout << lgput(n, p, inf);
return 0;
}
