Compilare: main.cpp: In function 'void DFS1(int, int)': main.cpp:15:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void DFS2(int, int)': main.cpp:32:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:34:20: warning: variable 'cost' set but not used [-Wunused-but-set-variable] int child, cost; ^~~~