Cod sursa(job #1606301)

Utilizator VladuZ1338Vlad Vlad VladuZ1338 Data 20 februarie 2016 09:13:57
Problema Invers modular Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.45 kb
#include <fstream>

using namespace std;

ifstream fin ("euclid3.in");
ofstream fout ("euclid3.out");

int a, b, d, x, y, n;

void Euclid (int a, int b, int &d, int &x, int &y)
{
    if (b==0) {d=a; x=1; y=0;}
    else
    {
        int x0, y0;
        Euclid(b, a%b, d, x0, y0);
        x=y0;
        y=x0-(a/b)*y0;
    }
}

int main()
{
    fin >> a >> n;
    d=x=y=0;
    Euclid (a, n, d, x, y);
    if (x<0) x+=n;
    fout << x;
}