int main(const int argc, const char *argv[]){ num_t sieve_limit = LIMIT; char *primes = malloc(sieve_limit+1); eratosthenes(primes, sieve_limit); printf("%lld\n", get_nth_prime(NTH, primes, sieve_limit)); free(primes); return 0; }
int main() { int t; eratosthenes(1000000); scanf("%d", &t); while (t--) { long long n; scanf("%I64d", &n); long long i = (long long) sqrt(n); if (i * i == n && !prime[i]) printf("YES\n"); else printf("NO\n"); } return 0; }
int main(int argc, char** argv) { int x[DIM]; /* Vector x element R^n */ initialize(x, DIM); eratosthenes(x, DIM); printf("Sorted vector x[%d]:\n", DIM); printvector(x, DIM); return EXIT_SUCCESS; }
void createIrredPolys (Poly* irredPolys) { // Use the following map for Eratosthenes' sieve int mapSize = 100; bool* map = 0; int count; do { mapSize *= 2; // dump old table and create a new one delete[] map; map = new bool [mapSize]; // find irreducible polynomials eratosthenes (map, mapSize, Poly (0)); // Count irreducible polynomials in this map count = 0; for (int i = 0; i < mapSize; i++) if (map [i]) count++; } while (count < NiederreiterMatrix::MAX_DIM); // do we have enough? // Copy the first MAX_DIM irreducible polynomials to irredPolys bool* p = map; for (int i = 0; i < NiederreiterMatrix::MAX_DIM; i++) { while (! *p) p++; irredPolys [i] = Poly (p++ - map); } // Free the memory used for the map delete[] map; }
int main(const int argc, const char *argv[]){ num_t a, b, nconsec, max_a=-COEF_LIMIT, max_b=-COEF_LIMIT, max_consec=0; char *primes = eratosthenes(PRIME_LIMIT); for (a=-COEF_LIMIT; a<COEF_LIMIT; a++) for (b=-COEF_LIMIT; b<COEF_LIMIT; b++){ nconsec = count_consecutive(primes, a, b); if (nconsec > max_consec) { max_consec = nconsec; max_a = a; max_b = b; } } printf("%lld\n", max_a*max_b); free(primes); return 0; }
int main(int argc, char **argv) { if(argc == 2) eratosthenes(atoi(argv[1])); else eratosthenes(50); return 0; }