Compilare: main.cpp: In function 'void dfs(int)': main.cpp:26:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:53:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < divisors.size(); i++){ ~~^~~~~~~~~~~~~~~~~ main.cpp:57:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~ main.cpp:67:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i + 1; j < divisors.size(); j++) ~~^~~~~~~~~~~~~~~~~