Compilare: main.cpp: In function 'void citire()': main.cpp:44:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[x].size();i++) ~^~~~~~~~~~~~ main.cpp:46:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<inc.size();i++) ~^~~~~~~~~~~ main.cpp:34:12: warning: unused variable 'j' [-Wunused-variable] {int i,a,b,j; ^ main.cpp: In function 'void bfs(int)': main.cpp:74:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[act.nod].size();i++) ~^~~~~~~~~~~~~~~~~~