Compilare: main.cpp: In function 'void dfs2(int, int, int)': main.cpp:39:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int h=0;h<v[x].size();++h) | ~^~~~~~~~~~~~ main.cpp: In function 'void up(int, int, int)': main.cpp:59:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(int h=0;h<v[x].size();++h) | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:120:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 120 | for(int h=0;h<s[nod].size();++h) | ~^~~~~~~~~~~~~~