Compilare: user.cpp: In function ‘void Find(int, int, int, int)’: user.cpp:20:21: warning: unused variable ‘x’ [-Wunused-variable] { int i; double pnt,x,y; ^ user.cpp: In function ‘void Solve()’: user.cpp:79:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[1].size();i++) ^ user.cpp:86:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();j++) ^ user.cpp:87:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j2=0;j2<v[i-1].size();j2++) ^ user.cpp:98:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[k].size();i++) ^