Compilare: main.cpp: In function 'int findEdge(int)': main.cpp:57:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(int i = pos[node]; i < adj[node].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'bool solve()': main.cpp:96:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(index = 0; index < buffer.size(); index++) | ~~~~~~^~~~~~~~~~~~~~~ main.cpp:99:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 99 | for(int i = index + 1; i < buffer.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:104:28: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 104 | return (ans.size() + 1 == m); | ~~~~~~~~~~~~~~~^~~~