Cod sursa(job #639189)
Utilizator | Data | 22 noiembrie 2011 18:30:51 | |
---|---|---|---|
Problema | Invers modular | Scor | 50 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.42 kb |
#include<stdio.h>
int A,N,X,Y;
int euclid(int A,int B,int &X,int &Y)
{
if(B == 0)
{
X = 1; Y = 0;
return A;
}
int D = euclid(B,A%B,X,Y);
int C = X; X = Y; Y = C-(A/B)*Y;
return D;
}
int main()
{
FILE *f = fopen("inversmodular.in","r");
FILE *g = fopen("inversmodular.out","w");
fscanf(f,"%d %d",&A,&N);
euclid(A,N,X,Y);
fprintf(g,"%d",X%N);
fclose(g);
fclose(f);
return 0;
}