Compilare: user.cpp: In constructor ‘treap::treap(long long int)’: user.cpp:20:15: warning: ‘treap::r’ will be initialized after [-Wreorder] treap *l,*r; ^ user.cpp:16:13: warning: ‘int treap::pr’ [-Wreorder] int cnt,pr; ^ user.cpp:39:5: warning: when initialized here [-Wreorder] treap(ll val) : val(val),l(0),r(0),pr(rand()+1) {lazy = 0;up();} ^ user.cpp: In function ‘long long int del(treap*&, int)’: user.cpp:107:1: warning: control reaches end of non-void function [-Wreturn-type] } ^