Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:20:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<muchii[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~ user.cpp:43:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<muchii[nod].size();i++) ~^~~~~~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:74:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<echipe.size();i++) ~^~~~~~~~~~~~~~ user.cpp:77:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<pctcritice.size();i++) ~^~~~~~~~~~~~~~~~~~ user.cpp:56:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("date.in", "r", stdin); ^