Cod sursa(job #2124404)

Utilizator andonis1616And Cuz andonis1616 Data 7 februarie 2018 10:50:09
Problema Invers modular Scor 60
Compilator cpp Status done
Runda Arhiva educationala Marime 0.34 kb
Raporteaza aceasta sursa 
#include <fstream>
using namespace std;
ifstream in ("inversmodular.in");
ofstream out ("inversmodular.out");

long long a,n,b,r;

int main()
{
    int i;
    in>>a>>n;
    a=a%n;
    b=n-2;
    r=1;
    while(b)
    {
        if(b%2==1)
            r=(r*a)%n;
        a=(a*a)%n;
        b/=2;
    }
    out<<r;
    return 0;
}