Compilare: user.cpp: In function ‘int euler(int, int)’: user.cpp:34:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++) ^ user.cpp:42:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void dfs(int)’: user.cpp:54:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:81:27: warning: unused variable ‘l’ [-Wunused-variable] int n, m, p, i, u, v, l, j, X, Y, A, B, C, D, nod, Xp, Yp, Z; ^