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  1. #include <bits/stdc++.h>
  2. typedef long long ll;
  3. using namespace std;
  4. const int N = 14, M = 1000000007;
  5. int t, n, x, f[N][6], id;
  6. ll ans;
  7. map<int, int> st;
  8. int Pow(int x, int n) {
  9. 	int y = 1;
  10. 	int u = x % M;
  11. 	while (n) {
  12. 		if (n & 1) y = (ll)y * u % M;
  13. 		n >>= 1;
  14. 		u = (ll)u * u % M;
  15. 	}
  16. 	return y;
  17. }
  18.  
  19. int count(int x) {
  20. 	return st[x];
  21. }
  22.  
  23. void gen(int s, int e, int mul) {
  24. 	if (s == e) {
  25. 		if (id == 0)
  26. 			++st[mul];
  27. 		else ans += count(((ll)x * Pow(mul, M - 2)) % M);
  28. 	}
  29. 	else for (int i = 0; i < 6; ++i)
  30. 		gen(s + 1, e, (ll)mul * f[s][i] % M);
  31. }
  32.  
  33.  
  34. int main() {
  35. 	scanf("%d", &t);
  36. 	while (t--) {
  37. 		scanf("%d%d", &n, &x);
  38. 		for (int i = 0; i < n; ++i)
  39. 			for (int j = 0; j < 6; ++j)
  40. 				scanf("%d", &f[i][j]);
  41. 		st.clear();
  42. 		id = 0;
  43. 		gen(0, n / 2, 1);
  44. 		ans = 0; id = 1;
  45. 		gen(n / 2, n, 1);
  46. 		printf("%lld\n", ans);
  47. 	}
  48. 	return 0;
  49. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/udraup
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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