Eroare de compilare: user.cpp:8:1: error: ‘vector’ does not name a type vector<pair<int, int> >G[50005]; ^~~~~~ user.cpp: In function ‘int main()’: user.cpp:19:5: error: ‘G’ was not declared in this scope G[y].push_back({-x, z}); ^ user.cpp:23:9: error: ‘G’ was not declared in this scope if (G[i].size() != 0) { ^ user.cpp:11:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("restrictii.in", "r", stdin); ^ user.cpp:12:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("restrictii.out", "w", stdout); ^ user.cpp:15:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &m, &val); ^ user.cpp:18:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &z); ^