Compilare: main.cpp: In function 'void dfs(int, int, int&)': main.cpp:16:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int i=0;i<adj_list[node].size();i++){ | ~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void read()': main.cpp:45:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for(int j = 0;j<adj_list[leaf].size();j++) | ~^~~~~~~~~~~~~~~~~~~~~~