Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:47:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i = 0; i < v[node].size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void del()': main.cpp:63:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 63 | for(int i = 0; i < frunze.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:65:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for(int j = 0; j < v[frunze[i]].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~