Language: C++

#include<bits/stdc++.h>
using namespace std;

#define f first
#define s second
#define p pair<int,int>
#define P pair<ll,ll>
#define pb push_back
#define ll long long
#define db double
#define zero(a) memset(a,0,sizeof(a))
#define inff(a,n) fill(a,a+n+1,inf)
#define all(a) a.begin(),a.end()
#define sz(a) int((a).size())
#define read(x) scanf("%lld",&x)
#define read2(x,y) scanf("%lld%lld",&x,&y)
#define write(x) printf("%lld\n",x)

const int maxn=2e5+5;
const ll inf=1e9;
const db pi=acos(-1);

ll x1,x2,y1,y2,n,x[maxn],dp[maxn],a,b,num,sum,ans;
vector<P>v(maxn);

int main()
{
    read2(x1,y1),read2(x2,y2);
    if(x1>x2)swap(x1,x2);
    if(y1>y2)swap(y1,y2);
    read(n);
    if(x1==x2&&y1==y2)printf("0");
    else if(x1==x2)
    {
        for(int i=0; i<n; i++)
        {
            read2(a,b);
            if(a==x1&&b>y1&&b<y2)
            {
                sum++;
            }
        }
        db xy=(y2-y1)*100,res=0;
        if(sum>0)res=20-5*pi;
        printf("%.12f",min(xy+(10*pi-20)*sum,xy+200-res));
    }
    else if(y1==y2)
    {
        for(int i=0; i<n; i++)
        {
            read2(a,b);
            if(a>x1&&a<x2&&b==y2)
            {
                sum++;
            }
        }
        db xy=(x2-x1)*100,res=0;
        if(sum>0)res=20-5*pi;
        printf("%.12f",min(xy+(10*pi-20)*sum,xy+200-res));
    }
    else
    {
        int per=0;
        for(int i=0; i<n; i++)
        {
            read2(a,b);
            if(a>x1&&a<x2&&b>y1&&b<y2)
            {
                v[per].f=a;
                v[per++].s=b;
            }
        }
        sort(v.begin(),v.begin()+per);
        //for(int i=0;i<per;i++)cout<<v[i].s<<endl;
        fill(dp,dp+per+1,inf);
        for(int i=0; i<per; i++)
        {
            *lower_bound(dp,dp+n,v[i].s)=v[i].s;
        }
        if(per==0)num=0;
        else num=lower_bound(dp,dp+n,inf)-dp;
        db xy=(y2-y1+x2-x1)*100;
        xy-=(20-5*pi)*num;
        printf("%.12f",xy);
    }
    return 0;
}


Compiler output:
a.cc:23:10: error: 'long long int y1' redeclared as different kind of entity
   23 | ll x1,x2,y1,y2,n,x[maxn],dp[maxn],a,b,num,sum,ans;
      |          ^~
In file included from /usr/include/features.h:523,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/os_defines.h:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/c++config.h:683,
                 from /usr/include/c++/14/cassert:43,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:33,
                 from a.cc:1:
/usr/include/x86_64-linux-gnu/bits/mathcalls.h:257:1: note: previous declaration 'double y1(double)'
  257 | __MATHCALL (y1,, (_Mdouble_));
      | ^~~~~~~~~~
a.cc: In function 'int main()':
a.cc:30:10: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   30 |     if(y1>y2)swap(y1,y2);
      |        ~~^~~
a.cc:30:18: error: no matching function for call to 'swap(double (&)(double) noexcept, long long int&)'
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:77:
/usr/include/c++/14/any:430:15: note: candidate: 'void std::swap(any&, any&)' (near match)
  430 |   inline void swap(any& __x, any& __y) noexcept { __x.swap(__y); }
      |               ^~~~
/usr/include/c++/14/any:430:15: note:   conversion of argument 2 would be ill-formed:
a.cc:30:22: error: cannot bind non-const lvalue reference of type 'std::any&' to an rvalue of type 'std::any'
   30 |     if(y1>y2)swap(y1,y2);
      |                      ^~
/usr/include/c++/14/any:191:7: note:   after user-defined conversion: 'std::any::any(_Tp&&) [with _Tp = long long int&; _VTp = long long int; _Mgr = _Manager_internal<long long int>; typename std::enable_if<(is_copy_constructible_v<_VTp> && (! __is_in_place_type_v<_VTp>)), bool>::type <anonymous> = true]'
  191 |       any(_Tp&& __value)
      |       ^~~
In file included from /usr/include/c++/14/exception:166,
                 from /usr/include/c++/14/stdexcept:38,
                 from /usr/include/c++/14/system_error:43,
                 from /usr/include/c++/14/bits/ios_base.h:46,
                 from /usr/include/c++/14/streambuf:43,
                 from /usr/include/c++/14/bits/streambuf_iterator.h:35,
                 from /usr/include/c++/14/iterator:66,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:54:
/usr/include/c++/14/bits/exception_ptr.h:229:5: note: candidate: 'void std::__exception_ptr::swap(exception_ptr&, exception_ptr&)'
  229 |     swap(exception_ptr& __lhs, exception_ptr& __rhs)
      |     ^~~~
/usr/include/c++/14/bits/exception_ptr.h:229:25: note:   no known conversion for argument 1 from 'double(double) noexcept' to 'std::__exception_ptr::exception_ptr&'
  229 |     swap(exception_ptr& __lhs, exception_ptr& __rhs)
      |          ~~~~~~~~~~~~~~~^~~~~
In file included from /usr/include/c++/14/future:51,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:176:
/usr/include/c++/14/bits/std_thread.h:328:3: note: candidate: 'void std::swap(thread&, thread&)'
  328 |   swap(thread& __x, thread& __y) noexcept
      |   ^~~~
/usr/include/c++/14/bits/std_thread.h:328:16: note:   no known conversion for argument 1 from 'double(double) noexcept' to 'std::thread&'
  328 |   swap(thread& __x, thread& __y) noexcept
      |        ~~~~~~~~^~~
In file included from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/sstream:1204:5: note: candidate: 'template<class _CharT, class _Traits, class _Allocator> void std::__cxx11::swap(basic_stringbuf<_CharT, _Traits, _Alloc>&, basic_stringbuf<_CharT, _Traits, _Alloc>&)'
 1204 |     swap(basic_stringbuf<_CharT, _Traits, _Allocator>& __x,
      |     ^~~~
/usr/include/c++/14/sstream:1204:5: note:   template argument deduction/substitution failed:
a.cc:30:18: note:   mismatched types 'std::__cxx11::basic_stringbuf<_CharT, _Traits, _Alloc>' and 'double(double) noexcept'
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
/usr/include/c++/14/sstream:1212:5: note: candidate: 'template<class _CharT, class _Traits, class _Allocator> void std::__cxx11::swap(basic_istringstream<_CharT, _Traits, _Allocator>&, basic_istringstream<_CharT, _Traits, _Allocator>&)'
 1212 |     swap(basic_istringstream<_CharT, _Traits, _Allocator>& __x,
      |     ^~~~
/usr/include/c++/14/sstream:1212:5: note:   template argument deduction/substitution failed:
a.cc:30:18: note:   mismatched types 'std::__cxx11::basic_istringstream<_CharT, _Traits, _Allocator>' and 'double(double) noexcept'
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
/usr/include/c++/14/sstream:1219:5: note: candidate: 'template<class _CharT, class _Traits, class _Allocator> void std::__cxx11::swap(basic_ostringstream<_CharT, _Traits, _Allocator>&, basic_ostringstream<_CharT, _Traits, _Allocator>&)'
 1219 |     swap(basic_ostringstream<_CharT, _Traits, _Allocator>& __x,
      |     ^~~~
/usr/include/c++/14/sstream:1219:5: note:   template argument deduction/substitution failed:
a.cc:30:18: note:   mismatched types 'std::__cxx11::basic_ostringstream<_CharT, _Traits, _Allocator>' and 'double(double) noexcept'
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
/usr/include/c++/14/sstream:1226:5: note: candidate: 'template<class _CharT, class _Traits, class _Allocator> void std::__cxx11::swap(basic_stringstream<_CharT, _Traits, _Allocator>&, basic_stringstream<_CharT, _Traits, _Allocator>&)'
 1226 |     swap(basic_stringstream<_CharT, _Traits, _Allocator>& __x,
      |     ^~~~
/usr/include/c++/14/sstream:1226:5: note:   template argument deduction/substitution failed:
a.cc:30:18: note:   mismatched types 'std::__cxx11::basic_stringstream<_CharT, _Traits, _Allocator>' and 'double(double) noexcept'
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
In file included from /usr/include/c++/14/regex:68,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:181:
/usr/include/c++/14/bits/regex.h:896:5: note: candidate: 'template<class _Ch_type, class _Rx_traits> void std::__cxx11::swap(basic_regex<_Ch_type, _Rx_traits>&, basic_regex<_Ch_type, _Rx_traits>&)'
  896 |     swap(basic_regex<_Ch_type, _Rx_traits>& __lhs,
      |     ^~~~
/usr/include/c++/14/bits/regex.h:896:5: note:   template argument deduction/substitution failed:
a.cc:30:18: note:   mismatched types 'std::__cxx11::basic_regex<_Ch_type, _Rx_traits>' and 'double(double) noexcept'
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
/usr/include/c++/14/bits/regex.h:2230:5: note: candidate: 'template<class _Bi_iter, class _Alloc> void std::__cxx11::swap(match_results<_BiIter, _Alloc>&, match_results<_BiIter, _Alloc>&)'
 2230 |     swap(match_results<_Bi_iter, _Alloc>& __lhs,
      |     ^~~~
/usr/include/c++/14/bits/regex.h:2230:5: note:   template argument deduction/substitution failed:
a.cc:30:18: note:   mismatched types 'std::__cxx11::match_results<_BiIter, _Alloc>' and 'double(double) noexcept'
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
In file included from /usr/include/c++/14/bits/stl_pair.h:61,
                 from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/bits/move.h:226:5: note: candidate: 'template<class _Tp> std::_Require<std::__not_<std::__is_tuple_like<_Tp> >, std::is_move_constructible<_Tp>, std::is_move_assignable<_Tp> > std::swap(_Tp&, _Tp&)'
  226 |     swap(_Tp& __a, _Tp& __b)
      |     ^~~~
/usr/include/c++/14/bits/move.h:226:5: note:   template argument deduction/substitution failed:
a.cc:30:18: note:   deduced conflicting types for parameter '_Tp' ('double(double) noexcept' and 'long long int')
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
/usr/include/c++/14/bits/move.h:250:5: note: candidate: 'template<class _Tp, long unsigned int _Nm> std::__enable_if_t<((bool)std::__is_swappable<_Tp>::value)> std::swap(_Tp (&)[_Nm], _Tp (&)[_Nm])'
  250 |     swap(_Tp (&__a)[_Nm], _Tp (&__b)[_Nm])
      |     ^~~~
/usr/include/c++/14/bits/move.h:250:5: note:   template argument deduction/substitution failed:
a.cc:30:18: note:   mismatched types '_Tp [_Nm]' and 'double(double) noexcept'
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1089:5: note: candidate: 'template<class _T1, class _T2> typename std::enable_if<std::__and_<std::__is_swappable<_T1>, std::__is_swappable<_T2> >::value>::type std::swap(pair<_T1, _T2>&, pair<_T1, _T2>&)'
 1089 |     swap(pair<_T1, _T2>& __x, pair<_T1, _T2>& __y)
      |     ^~~~
/usr/include/c++/14/bits/stl_pair.h:1089:5: note:   template argument deduction/substitution failed:
a.cc:30:18: note:   mismatched types 'std::pair<_T1, _T2>' and 'double(double) noexcept'
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1106:5: note: candidate: 'template<class _T1, class _T2> typename std::enable_if<(! std::__and_<std::__is_swappable<_T1>, std::__is_swappable<_T2> >::value)>::type std::swap(pair<_T1, _T2>&, pair<_T1, _T2>&)' (deleted)
 1106 |     swap(pair<_T1, _T2>&, pair<_T1, _T2>&) = delete;
      |     ^~~~
/usr/include/c++/14/bits/stl_pair.h:1106:5: note:   template argument deduction/substitution failed:
a.cc:30:18: note:   mismatched types 'std::pair<_T1, _T2>' and 'double(double) noexcept'
   30 |     if(y1>y2)swap(y1,y2);
      |              ~~~~^~~~~~~
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52:
/usr/include/c++/14/bits/basic_string.h:4039:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> void std::swap(__cxx11::basic_string<_CharT, _Traits, _Allocator>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 4039 |     swap(basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~