Compilare: main.cpp: In function 'int getnext(int&, int, int, int)': main.cpp:19:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 19 | if (v[x].size()<=st[i][st[i][0]]) | ~~~~~~~~~~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfss(int, int, int)': main.cpp:66:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for (int i=fir[nod];i<v[nod].size();i=urm[nod][i]) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:103:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 103 | for (int j=0;j<v[i].size();++j) | ~^~~~~~~~~~~~