void close_pipes(int id) {
    for (int i = 1; i < proc_cnt; i++) {
        for (int j = 0; j < proc_cnt; j++) {
            int tmp_read = procs[i].pipes[j].read;
            int tmp_write = procs[i].pipes[j].write;
            if(i==j)
                continue;
            if (i == id) {
                close(procs[i].pipes[j].read);
                fprintf(p_pipes_log, "CLOSED READ-end (%d) pipe FOR procs %d -> %d\n", tmp_read, i, j);
            }
            else if (j == id) {
                close(procs[i].pipes[j].write);
                fprintf(p_pipes_log, "CLOSED WRITE-end (%d) pipe FOR procs %d -> %d\n", tmp_write, i, j);
            }
            else {
                if(j==procs[i].id) continue;
                close(procs[i].pipes[j].read);
                close(procs[i].pipes[j].write);
                fprintf(p_pipes_log, "CLOSED WRITE-end (%d) pipe FOR procs %d -> %d\n", tmp_write, i, j);
                fprintf(p_pipes_log, "CLOSED READ-end (%d) pipe FOR procs %d -> %d\n", tmp_read, i, j);
            }
        }
    }
}