Cod sursa(job #2578997)

Utilizator driver71528@gmail.comTerec Andrei-Sorin [email protected] Data 11 martie 2020 20:27:34
Problema Invers modular Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.5 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("inversmodular.in");
ofstream g("inversmodular.out");
int a,n;
void Euclid(int a,int b,long long& x,long long& y)
{
    if(b==0)
    {
        x=1;
        y=0;
    }
    else
    {
        long long x0,y0;
        Euclid(b,a%b,x0,y0);
        x=y0;
        y=(x0-a/b*y0);
    }
}
int main()
{
    long long x,y;
    f>>a>>n;
    f.close();
    Euclid(a,n,x,y);
    x=((x%n)+n)%n;
    g<<x;
    return 0;
}