Compilare: user.cpp: In function ‘void dfs(int, std::vector<bool>&)’: user.cpp:12:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graph[node].size(); i++) { ^ user.cpp: In function ‘bool isConnected()’: user.cpp:24:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < visited.size(); i++) { ^ user.cpp: In function ‘void removeEdge(int, int)’: user.cpp:33:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graph[x].size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:108:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < eulerCycle.size()-1; i++) { ^