Compilare: main.cpp: In function 'void dfs(int)': main.cpp:20:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(i = 0; i < G[nod].size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void tdfs(int)': main.cpp:34:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for(i = 0; i < GT[nod].size(); i++) | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:74:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for(int j = 0; j < ctc[i].size(); j++) | ~~^~~~~~~~~~~~~~~