Compilare: main.cpp: In function 'void bfs(int)': main.cpp:29:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[el].size(); i++){ ~^~~~~~~~~~~~~ main.cpp: In function 'void citire()': main.cpp:18:13: warning: iteration 100004 invokes undefined behavior [-Waggressive-loop-optimizations] vizitat[i]=-1; ~~~~~~~~~~^~~ main.cpp:17:16: note: within this loop for(int i=1; i<=100005; i++){ ~^~~~~~~~