Compilare: main.cpp: In function 'void dfs(int)': main.cpp:17:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | while (poz[nod]<adj[nod].size()) { | ~~~~~~~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:39:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | if (poz[i]!=adj[i].size()) { | ~~~~~~^~~~~~~~~~~~~~~