Cod sursa(job #2768887)
Utilizator | Data | 12 august 2021 15:37:25 | |
---|---|---|---|
Problema | Invers modular | Scor | 100 |
Compilator | c-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.36 kb |
#include<stdio.h>
int a,n,x,y;
int E(int *x,int *y,int a,int b)
{
int e,f,d;
if(!b) {
(*x)=1,(*y)=0;
return a;
}
d=E(&e,&f,b,a%b),(*x)=f,(*y)=e-a/b*f;
return d;
}
int main()
{
freopen("inversmodular.in","r",stdin),freopen("inversmodular.out","w",stdout),scanf("%d%d",&a,&n),E(&x,&y,a,n),printf("%d",x<=0?(n+x%n):x);
return 0;
}