Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:28:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0 ; h < g[node].size() ; h++){ ~~^~~~~~~~~~~~~~~~ user.cpp: In function ‘void build(int, int, int)’: user.cpp:55:39: warning: narrowing conversion of ‘level[pos[i]]’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] aint[node].push_back({level[pos[i]] , cost[pos[i]]}); ~~~~~~~~~~~~^ user.cpp:58:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1 ; i < aint[node].size() ; i++) { ~~^~~~~~~~~~~~~~~~~~~