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  1. //http://w...content-available-to-author-only...o.org/index.php?page=viewproblem2&cpid=1132
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4.  
  5. int K, N;
  6. vector<vector<string>>answer;
  7. vector<vector<string>>paper;
  8. map<string, int> names;
  9.  
  10. void testing(vector<vector<string>>a) {//prints out a vector<vector<string>>
  11. 	for (int i = 0; i < a.size(); i++) {
  12. 		for (int j = 0; j < a[i].size(); j++) {
  13. 			cout << a[i][j];
  14. 		}
  15. 		cout << endl;
  16. 	}
  17. }
  18.  
  19. void update(vector<string>b, int index) { //updates the answer vector based on the paper and index
  20. 	for (int i = 0; i < index; i++) {
  21. 		for (int j = index; j < N; j++) {
  22. 			answer[names[b[j]]][names[b[i]]] = "1";
  23. 			answer[names[b[i]]][names[b[j]]] = "0";
  24. 		}
  25. 	}
  26. }
  27.  
  28. int main(void) {
  29.  
  30. 	cin >> K >> N;
  31.  
  32. 	//dictionary for names for quick conversion from name to integer
  33. 	for (int i = 0; i < N; i++) {
  34. 		string temp;
  35. 		cin >> temp;
  36. 		names.insert({ temp, i });
  37. 	}
  38. 	//inputs the names for each paper
  39. 	for (int i = 0; i < K; i++) {
  40. 		vector<string>temp;
  41. 		for (int j = 0; j < N; j++) {
  42. 			string temps;
  43. 			cin >> temps;
  44. 			temp.push_back(temps);
  45. 		}
  46. 		paper.push_back(temp);
  47. 	}
  48. 	//initialises the answer matrix with all ? except for the diagonal (where values should be B)
  49. 	for (int i = 0; i < N; i++) {
  50. 		vector<string>temp;
  51. 		for (int j = 0; j < N; j++) {
  52. 			if (i != j) {
  53. 				temp.push_back("?");
  54. 			}
  55. 			else {
  56. 				temp.push_back("B");
  57. 			}
  58. 		}
  59. 		answer.push_back(temp);
  60. 	}
  61.  
  62. 	for (int i = 0; i < K; i++) {//for each paper
  63. 		for (int j = 1; j < N; j++) {//for each name
  64. 			cout << paper[i][j].compare(paper[i][j - 1]) << endl;
  65. 			if (paper[i][j].compare(paper[i][j - 1]) == -1) {
  66. 				cout << "FOUND " << i << " " << j << endl;
  67. 				update(paper[i], j);
  68. 			}
  69. 		}
  70. 	}
  71. 	testing(answer);
  72. 	//The output from my 2019 Visual Studio Code is fine, it passes all test cases i tried from the USACO website
  73. 	//But when I submit it to the USACO website with C++17 chosen, it prints out the initial answer matrix
  74. 	//which is the one on line 49
  75.  
  76. 	return 0;
  77. }
Success #stdin #stdout 0s 5496KB
comments (?)
stdin 
1 3
dean elsie mildred
elsie mildred dean
stdout 
8
-9
B??
?B?
??B
https://ideone.com/Hp0Cpq
Acowdemia II
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
secret

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