Cod sursa(job #1819940)
Utilizator | Data | 30 noiembrie 2016 23:40:44 | |
---|---|---|---|
Problema | Invers modular | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.46 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("inversmodular.in");
ofstream g("inversmodular.out");
void eucl(int a,int n,int &x,int &y)
{
if(n==0)
{
x=1;
y=0;
}
else
{
int x0,y0;
eucl(n,a%n,x0,y0);
x=y0;
y=x0-(a/n)*y0;
}
}
int main()
{
int A,N,x,y;
f>>A>>N;
eucl(A,N,x,y);
if(x<0)
x+=N;
g<<x<<"\n";
return 0;
}