Compilare: user.cpp: In function ‘void topSort()’: user.cpp:45:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < v[x].size(); ++j) { ^ user.cpp: In function ‘int main()’: user.cpp:77:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < v[x].size(); ++j) { ^ user.cpp:92:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < vTr[x].size(); ++j) { ^ user.cpp:57:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:59:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t[i]); ^ user.cpp:62:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &m); ^ user.cpp:65:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^