Cod sursa(job #2371183)
Utilizator | Data | 6 martie 2019 16:31:36 | |
---|---|---|---|
Problema | Invers modular | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.49 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("inversmodular.in");
ofstream g("inversmodular.out");
int a,n,d,x,y;
void euclid(int a,int b,int& d,int& x,int& y){
if(b==0){
d=a;
x=1;
y=0;
return;
}else{
int x0,y0;
euclid(b,a%b,d,x0,y0);
x=y0;
y=x0-(a/b)*y0;
}
}
int main(){
f>>a>>n;
euclid(a,n,d,x,y);
while(x<0){
x+=n;
}
x=x%n;
g<<x;
f.close();
g.close();
}