Compilare: main.cpp: In function 'void dfs(int)': main.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(i = 0; i < g[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:157:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 157 | for(int i = 0; i < repr.size(); ++i) | ~~^~~~~~~~~~~~~