Cod sursa(job #2178079)
Utilizator | David Catalin UnseenMarksman | Data | 19 martie 2018 02:01:14 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.54 kb |
#include <iostream>
#include <fstream>
#define MOD 1999999973
using namespace std;
unsigned long long exponentiere_rapida(unsigned long long x, unsigned long long y)
{
if(y == 1) return x;
else if(y%2) return x*exponentiere_rapida((x*x)%MOD, (y-1)/2);
else return exponentiere_rapida((x*x)%MOD, y/2);
}
int main()
{
ifstream fin("lgput.in");
ofstream fout("lgput.out");
unsigned long long n,p=1,rest;
fin>>n>>p;
rest=exponentiere_rapida(n,p);
fout<<rest<<'\n';
return 0;
}