Cod sursa(job #2529193)
Utilizator | Data | 23 ianuarie 2020 08:15:12 | |
---|---|---|---|
Problema | Invers modular | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.44 kb |
#include <bits/stdc++.h>
using namespace std;
ifstream f("inversmodular.in");
ofstream g("inversmodular.out");
void Euclid(int a,int b,int &x,int &y)
{
if(b==0)
{
x=1;
y=0;
return;
}
int x0,y0;
Euclid(b,a%b,x0,y0);
x=y0;
y=x0-(a/b)*y0;
}
int main()
{
int N,A,X,Y;
f>>A>>N;
Euclid(A,N,X,Y);
X=X%N;
if(X<0) X=N+X;
g<<X;
return 0;
}