Compilare: main.cpp: In function 'void dfs(int, int, int&, int)': main.cpp:105:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void solve(int, int)': main.cpp:117:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < queries[node].size();i++){ ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:122:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < queries[node].size(); i++){ ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:126:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0;h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~