Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:24:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[node].size(); i++) { ^ user.cpp: In function ‘void delete_node(int, int)’: user.cpp:39:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[node].size(); i++) { ^ user.cpp: In function ‘void compute_dp(int, int)’: user.cpp:52:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[node].size(); i++) { ^