Language: C++

#include<cstdio>
#include<cmath>
#include<algorithm>
#include<cctype>
#include<cstring>
#include<queue>
#include<iostream>
#include<map>
using namespace std;
typedef long long ll;
typedef double lf;
typedef unsigned un;
typedef int in;
#define mian main
#define maxn 10000+10
#define maxm 10000+10
#define _(a) read(a)
#define non void
#define inf 2147483647
#define bre break
#define con continue
#define prq priority_queue
#define re register
#define bu bool
#define cz char
#define cst const
#define ope operator
#define inl inline
#define upp upper_bound
#define low lower_bound
#define next_per next_permutation
inl cz gc(){static cz buf[100000],*L=buf,*R=buf;return L==R&&(R=(L=buf)+fread(buf,1,100000,stdin),L==R)?EOF:*L++;}
template<typename T>inl T Max(T a,T b){return a>b?a:b;}
template<typename T>inl T Min(T a,T b){return a<b?a:b;}
template<typename T>inl T Abs(T a){return a<0?-a:a;}
template<typename T>inl non read(T &a){a=0;T k=1;char c=gc();while(c<'0'||c>'9')k=c=='-'?-1:k,c=gc();while(c>='0'&&c<='9')a=a*10+(c^48),c=gc();if(c!='.'){a*=k;return;}T t=0.1;while(c<'0'||c>'9')c=gc();while(c>='0'&&c<='9')a+=t*(c^48),c=gc(),t*=0.1;a*=k;}
template<typename T>non write(T a,cz t=' '){if(a==0){putc(48,stdout),putc(t,stdout);return;}if(a<0){a=-a;putc('-',stdout);}cz c[30];in le=0;while(a){c[++le]=a%10+48;a/=10;}for(re in i=le;i>=1;--i)putc(c[i],stdout);putc(t,stdout);}
map<int,int>m;
in n,k,a,s;
in main()
{
	read(n),read(k);
	for(re in i=1;i<=n;++i){read(a);++m[a];}
	sort(m+1,m+1+n);
	for(in i=n;i>n-k;--i)s+=m[i];
	write(n-s);
	//freopen(".in","r",stdin);
	//freopen(".out","w",stdout);
}


Compiler output:
a.cc: In function 'void write(T, char)':
a.cc:37:183: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   37 | template<typename T>non write(T a,cz t=' '){if(a==0){putc(48,stdout),putc(t,stdout);return;}if(a<0){a=-a;putc('-',stdout);}cz c[30];in le=0;while(a){c[++le]=a%10+48;a/=10;}for(re in i=le;i>=1;--i)putc(c[i],stdout);putc(t,stdout);}
      |                                                                                                                                                                                       ^
a.cc: In function 'in main()':
a.cc:43:19: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   43 |         for(re in i=1;i<=n;++i){read(a);++m[a];}
      |                   ^
a.cc:44:15: error: no match for 'operator+' (operand types are 'std::map<int, int>' and 'int')
   44 |         sort(m+1,m+1+n);
      |              ~^~
      |              | |
      |              | int
      |              std::map<int, int>
In file included from /usr/include/c++/14/bits/stl_algobase.h:67,
                 from /usr/include/c++/14/bits/specfun.h:43,
                 from /usr/include/c++/14/cmath:3906,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_iterator.h:627:5: note: candidate: 'template<class _Iterator> constexpr std::reverse_iterator<_Iterator> std::operator+(typename reverse_iterator<_Iterator>::difference_type, const reverse_iterator<_Iterator>&)'
  627 |     operator+(typename reverse_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:627:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/stl_iterator.h:1798:5: note: candidate: 'template<class _Iterator> constexpr std::move_iterator<_IteratorL> std::operator+(typename move_iterator<_IteratorL>::difference_type, const move_iterator<_IteratorL>&)'
 1798 |     operator+(typename move_iterator<_Iterator>::difference_type __n,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1798:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   44 |         sort(m+1,m+1+n);
      |                ^
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:7:
/usr/include/c++/14/bits/basic_string.h:3598:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3598 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3598:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   'std::map<int, int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3616:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3616 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3616:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   mismatched types 'const _CharT*' and 'std::map<int, int>'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3635:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3635 |     operator+(_CharT __lhs, const basic_string<_CharT,_Traits,_Alloc>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3635:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3652:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3652 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3652:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   'std::map<int, int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3670:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, _CharT)'
 3670 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs, _CharT __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3670:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   'std::map<int, int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3682:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3682 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3682:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   'std::map<int, int>' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3689:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3689 |     operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3689:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   'std::map<int, int>' is not derived from 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3696:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3696 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3696:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   'std::map<int, int>' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3719:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(const _CharT*, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3719 |     operator+(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3719:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   mismatched types 'const _CharT*' and 'std::map<int, int>'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3726:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(_CharT, __cxx11::basic_string<_CharT, _Traits, _Allocator>&&)'
 3726 |     operator+(_CharT __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3726:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   mismatched types 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3733:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, const _CharT*)'
 3733 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3733:5: note:   template argument deduction/substitution failed:
a.cc:44:16: note:   'std::map<int, int>' is not derived from 'std::__cxx11::basic_string<_CharT, _Traits, _Allocator>'
   44 |         sort(m+1,m+1+n);
      |                ^
/usr/include/c++/14/bits/basic_string.h:3740:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::__cxx11::basic_string<_CharT, _Traits, _Allocator> std::operator+(__cxx11::basic_string<_CharT, _Traits, _Allocator>&&, _CharT)'
 3740 |     operator+(basic_string<_CharT, _Traits, _Alloc>&& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3740:5: note:   template argument deduction/substitution failed:
a.cc:44:16