Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:32:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<date>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(; poz[c][x]<graf[c][x].size(); poz[c][x]++){ | ~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:78:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<date>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for(int j=0; j<nod[i].size()/2; j++){ | ~^~~~~~~~~~~~~~~~ main.cpp:105:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 105 | for(int i=2; i<ans.size(); i++) | ~^~~~~~~~~~~