3

#include <stdio.h>
#include <stdlib.h>

int main()
{
    FILE* fp=fopen("numere.txt","r");
    FILE* f=fopen("numere_out.txt","w");
    if(!fp)
        return -1;
    int n, key;
    fscanf(fp,"%d",&n);
    fscanf(fp,"%d",&key);
    for(int i=0;i<n;i++)
    {
        int x;
        fscanf(fp,"%d",&x);
        fprintf(f,"%d ",x^key);
    }
    fclose(fp);
    fclose(f);
    fp=fopen("numere_out.txt","r");
    FILE* g=fopen("numere_out2.txt","w");
    for(int i=0;i<n;i++)
    {
        int x;
        fscanf(fp,"%d",&x);
        fprintf(f,"%d ",x^key);
    }
    fclose(fp);
    fclose(g);
    return 0;
}