Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:16:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); ++i){ ^ user.cpp: In function ‘void elimin(int, int)’: user.cpp:24:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[u].size(); ++i){ ^ user.cpp: In function ‘void rez(int, int, int)’: user.cpp:38:23: warning: unused variable ‘step2’ [-Wunused-variable] int step1 = 0,step2 = 0,zu = 0,yu = 0,xu = 0; ^ user.cpp:38:33: warning: unused variable ‘zu’ [-Wunused-variable] int step1 = 0,step2 = 0,zu = 0,yu = 0,xu = 0; ^ user.cpp:38:40: warning: unused variable ‘yu’ [-Wunused-variable] int step1 = 0,step2 = 0,zu = 0,yu = 0,xu = 0; ^ user.cpp:38:47: warning: variable ‘xu’ set but not used [-Wunused-but-set-variable] int step1 = 0,step2 = 0,zu = 0,yu = 0,xu = 0; ^