Compilare: main.cpp: In function 'int findEdge(int)': main.cpp:59:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(int i = pos[node]; i < adj[node].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'bool solve()': main.cpp:101:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 101 | for(index = 0; index < buffer.size(); index++) | ~~~~~~^~~~~~~~~~~~~~~ main.cpp:104:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 104 | for(int i = index + 1; i < buffer.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:106:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 106 | for(int i = 0; i < buffer.size() && i < index; i++) | ~~^~~~~~~~~~~~~~~ main.cpp:113:23: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 113 | return(ans.size() == m); | ~~~~~~~~~~~^~~~