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 'void solve()': main.cpp:98:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 98 | for(index = 0; index < buffer.size(); index++) | ~~~~~~^~~~~~~~~~~~~~~ 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(int i = index + 1; i < buffer.size(); i++) | ~~^~~~~~~~~~~~~~~