Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:24:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0 ; h < g[node].size() ; h++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int solve(int, int)': main.cpp:67:5: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(query(pos[x]) == query(pos[y])) ^