Compilare: main.cpp: In function 'void que()': main.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[nod].size(); i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'void back()': main.cpp:41:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[n].size(); i++){ ~~^~~~~~~~~~~~~ main.cpp: In function 'void bfs1()': main.cpp:64:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[nod].size(); i++){ ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void bfs2()': main.cpp:77:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < g[nod].size(); i++){ ~~^~~~~~~~~~~~~~~