Compilare: main.cpp: In function 'void dfs1(int)': main.cpp:27:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[poz].size(); i++) { ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:58:16: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized] dfs1(start); ^