Compilare: main.cpp: In function 'void Erase_neighbour(int, int)': main.cpp:70:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < g[node].size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:85:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] in >> c + 1; ~~^~~ main.cpp:131:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (g[i].size() < k) ~~~~~~~~~~~~^~~ main.cpp:147:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (g[k].size() < k) ~~~~~~~~~~~~^~~