Submission #260156

#	Time	Username	Problem	Language	Result	Execution time	Memory
260156		sckmd	Baloni (COCI15_baloni)	C++14	Compilation error	0 ms	0 KiB

baloni

#include <bits/stdc++.h>

using namespace std;
#define MAXN 1000005
typedef pair<int,int> pii;
set <pii> st;

void go(int height,int prev)
{
  if(st.lower_bound(height,prev)==st.end())return ;
  auto it = st.lower_bound({height,prev});
  pii x = *it;
  if(x.first != height)return ;
  if(x.second < prev)return ;
  st.erase(it);
  go(height-1,x.second);
}

int solve()
{
  int ans = 0;
  for(int height = MAXN-1; height > 0;)
  {
    if(st.lower_bound({height,-1})==st.end()){height--;continue;}
    /*auto it = st.lower_bound({height,-1});
    pii x = *it;
    if(x.first != height){height--;continue;}*/
    go(height,-1);
    ans++;
  }
  return ans;
}

int main()
{
  ios_base::sync_with_stdio(false);
  int n;
  cin >> n;
  for(int i = 1; i <= n; i++)
  {
    int h;
    cin >> h;
    st.insert({h,i});
  }
  cout << solve();
  return 0;
}

Compilation message (stderr)

baloni.cpp: In function 'void go(int, int)':
baloni.cpp:10:32: error: no matching function for call to 'std::set<std::pair<int, int> >::lower_bound(int&, int&)'
   if(st.lower_bound(height,prev)==st.end())return ;
                                ^
In file included from /usr/include/c++/7/set:61:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:87,
                 from baloni.cpp:1:
/usr/include/c++/7/bits/stl_set.h:800:7: note: candidate: std::set<_Key, _Compare, _Alloc>::iterator std::set<_Key, _Compare, _Alloc>::lower_bound(const key_type&) [with _Key = std::pair<int, int>; _Compare = std::less<std::pair<int, int> >; _Alloc = std::allocator<std::pair<int, int> >; std::set<_Key, _Compare, _Alloc>::iterator = std::_Rb_tree_const_iterator<std::pair<int, int> >; std::set<_Key, _Compare, _Alloc>::key_type = std::pair<int, int>]
       lower_bound(const key_type& __x)
       ^~~~~~~~~~~
/usr/include/c++/7/bits/stl_set.h:800:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/7/bits/stl_set.h:804:7: note: candidate: std::set<_Key, _Compare, _Alloc>::const_iterator std::set<_Key, _Compare, _Alloc>::lower_bound(const key_type&) const [with _Key = std::pair<int, int>; _Compare = std::less<std::pair<int, int> >; _Alloc = std::allocator<std::pair<int, int> >; std::set<_Key, _Compare, _Alloc>::const_iterator = std::_Rb_tree_const_iterator<std::pair<int, int> >; std::set<_Key, _Compare, _Alloc>::key_type = std::pair<int, int>]
       lower_bound(const key_type& __x) const
       ^~~~~~~~~~~
/usr/include/c++/7/bits/stl_set.h:804:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/7/bits/stl_set.h:810:2: note: candidate: template<class _Kt> decltype ((std::set<_Key, _Compare, _Alloc>::iterator)(((std::set<_Key, _Compare, _Alloc>*)this)->std::set<_Key, _Compare, _Alloc>::_M_t._M_lower_bound_tr(__x))) std::set<_Key, _Compare, _Alloc>::lower_bound(const _Kt&) [with _Kt = _Kt; _Key = std::pair<int, int>; _Compare = std::less<std::pair<int, int> >; _Alloc = std::allocator<std::pair<int, int> >]
  lower_bound(const _Kt& __x)
  ^~~~~~~~~~~
/usr/include/c++/7/bits/stl_set.h:810:2: note:   template argument deduction/substitution failed:
baloni.cpp:10:32: note:   candidate expects 1 argument, 2 provided
   if(st.lower_bound(height,prev)==st.end())return ;
                                ^
In file included from /usr/include/c++/7/set:61:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:87,
                 from baloni.cpp:1:
/usr/include/c++/7/bits/stl_set.h:816:2: note: candidate: template<class _Kt> decltype ((std::set<_Key, _Compare, _Alloc>::const_iterator)(((const std::set<_Key, _Compare, _Alloc>*)this)->std::set<_Key, _Compare, _Alloc>::_M_t._M_lower_bound_tr(__x))) std::set<_Key, _Compare, _Alloc>::lower_bound(const _Kt&) const [with _Kt = _Kt; _Key = std::pair<int, int>; _Compare = std::less<std::pair<int, int> >; _Alloc = std::allocator<std::pair<int, int> >]
  lower_bound(const _Kt& __x) const
  ^~~~~~~~~~~
/usr/include/c++/7/bits/stl_set.h:816:2: note:   template argument deduction/substitution failed:
baloni.cpp:10:32: note:   candidate expects 1 argument, 2 provided
   if(st.lower_bound(height,prev)==st.end())return ;
                                ^