Compilare: main.cpp: In function 'void dfsn(int, int)': main.cpp:14:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for (int i=0;i<v[nod].size();++i) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int getnext(int&, int, int, int)': main.cpp:28:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 28 | if (v[x].size()<=st[i][st[i][0]]) | ~~~~~~~~~~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfss(int, int, int)': main.cpp:72:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for (int i=fir[nod];i<v[nod].size();i=urm[nod][i]) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:110:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 110 | for (int j=0;j<v[i].size();++j) | ~^~~~~~~~~~~~