Compilare: main.cpp: In function 'int main()': main.cpp:76:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 76 | for(int i=0;i<ans.size();i++) | ~^~~~~~~~~~~ main.cpp: In function 'void dfs(int)': main.cpp:83:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for(int i=0;i<g[x].size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'void dfsg(int)': main.cpp:97:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 97 | for(int i=0;i<gt[x].size();i++) | ~^~~~~~~~~~~~~