Compilare: user.cpp: In function ‘int minimizeDiameter()’: user.cpp:125:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < EdgeList.size(); i++) ^ user.cpp:127:7: warning: left operand of comma operator has no effect [-Wunused-value] d1, d2; ^ user.cpp:127:9: warning: right operand of comma operator has no effect [-Wunused-value] d1, d2; ^ user.cpp: In function ‘std::map<std::pair<int, int>, int>::iterator access(ii, std::string)’: user.cpp:39:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:156:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &V); ^ user.cpp:170:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &start, &end); ^