Compilare: main.cpp: In function 'void dfs(int)': main.cpp:27:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[node].size(); i++) { ~~^~~~~~~~~~~~~~~~ main.cpp:37:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i + 1 < d[node].size() && d[node][i] + d[node][i + 1] > k) { ~~~~~~^~~~~~~~~~~~~~~~ main.cpp:42:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < d[node].size() && d[node][i] > k) { ~~^~~~~~~~~~~~~~~~ main.cpp:47:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i < d[node].size()) ~~^~~~~~~~~~~~~~~~