Compilare: main.cpp: In function 'void dfs(int)': main.cpp:18:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for (int i = 0;i < e[node].size();i++) { | ~~^~~~~~~~~~~~~~~~ main.cpp:24:34: warning: comparison of integer expressions of different signedness: 'std::stack<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 24 | while (st.size() > s) { | ~~~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:53:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for (int j = 0;j < ans[i].size();j++) | ~~^~~~~~~~~~~~~~~