#include "pbc.h"int main(int argc, char **argv){    darray_t L;    d_param_t param;    cm_info_ptr cm;    int D = 9563;    if (argc > 1) {	int m;	D = atoi(argv[1]);	m = D % 4;	if (D <= 0 || m == 1 || m == 2) {	    fprintf(stderr, "D must be 0 or 3 mod 4 and positive\n");	    exit(1);	}    }    fprintf(stderr, "Using D = %d\n", D);    darray_init(L);    find_mnt6_curve(L, D, 500);    if (!L->count) {	fprintf(stderr, "No suitable curves for this D\n");	exit(1);    }    cm = darray_at(L, 0);    d_param_init(param);    fprintf(stderr, "gendparam: computing Hilbert polynomial and finding roots...\n");    d_param_from_cm(param, cm);    fprintf(stderr, "gendparam: bits in q = %zu\n", mpz_sizeinbase(cm->q, 2));    d_param_out_str(stdout, param);    // If we weren't exiting now, would cm_info_clear every entry of L    // and darray_clear L    return 0;}