Compilare: main.cpp: In function 'void dfs(short int, short int, short int)': main.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < edges2[cur].size();++i) { ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:57:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short int j = 0;j < edges[cur].size();++j) { ~~^~~~~~~~~~~~~~~~~~~ main.cpp:66:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short int j = 0;j < v.size();++j) { ~~^~~~~~~~~~