Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:16:19: 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<v[x].size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:81:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for (j=1;j<ceau[i].size();j++) | ~^~~~~~~~~~~~~~~