Compilare: main.cpp: In function 'void dfs(int)': main.cpp:23:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[x].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:86:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<solutie.size();i++) ~^~~~~~~~~~~~~~~