Compilare: main.cpp: In function 'void dfs(int)': main.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int y = 0 ; y < v[i].size() ; y++){ | ~~^~~~~~~~~~~~~ main.cpp: In function 'void dfs_invers(int, int)': main.cpp:24:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int y = 0 ; y < v1[i].size() ; y++){ | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:58:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int y = 0 ; y < ctc[i].size() ; ++y){ | ~~^~~~~~~~~~~~~~~