Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:23:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0;i < v[nod].size();i++){ ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void verifica()': main.cpp:41:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0;i < c.size();i++){ ~~^~~~~~~~~~ main.cpp:42:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t = 0;t < v[c[i]].size();i++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:56:13: warning: unused variable 'cat' [-Wunused-variable] int cat = 0; ^~~