Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:37:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<GT[nod].size(); ++i) ^ user.cpp:57:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<G[nod].size(); ++i) ^ user.cpp: In function ‘void read()’: user.cpp:24:49: warning: array subscript is above array bounds [-Warray-bounds] G[perm_init[1][i]].push_back(perm_init[2][i]); ^ user.cpp:25:23: warning: array subscript is above array bounds [-Warray-bounds] GT[perm_init[2][i]].push_back(perm_init[1][i]); ^