Compilare: user.cpp: In function ‘int calculateDist(long int, long int)’: user.cpp:54:25: warning: variable ‘dist’ set but not used [-Wunused-but-set-variable] long d1, d2, c = 0, dist; ^ user.cpp:99:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void solve()’: user.cpp:105:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < V.size (); i ++) ^ user.cpp:106:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < H.size (); j ++) { ^ user.cpp:115:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i <= V.size(); i ++) ^