Language: C++

#include <iostream>
#include <algorithm>
#include <cstdio>
#include <string>
#include <cstring>

using namespace std;

void update(int k,int x);
pair<int, int> seg[1 << 18];



int main(){

  int n,r,l;
  int d,t,x;
  int i;
  int team[1000];
  int sento=0,watch=0,maxi=0;

  scanf("%d %d %d",&n,&r,&l);
  for(i=0;i<n;i++) update(i,0);

  for(i=0;i<r;i++){
    scanf("%d %d %d",&d,&t,&x);
    team[sento]+=t-watch;
    update(d-1,x);
    sento=seg[0].second-1;
    watch=t;
  }
  team[sento]+=l-watch;

  for (int i=1;i<n;i++){
    if(team[maxi]<team[i]) maxi=i;
  }
  printf("%d\n",maxi+1);
  
  return 0;
}



void update(int k,int x){
  int id;
  
  id=k+1;
  k += (1 << 17) - 1;
  
  seg[k].first+=x;
  seg[k].second=id;
  
  while(k){
    k=(k-1)/2;
    if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
    else if(seg[k * 2 + 1].first < seg[k * 2 + 2].first) seg[k] = seg[k * 2 + 2];
    else  seg[k] = seg[k * 2 + 1];
  }
  return;
}

Compiler output:
a.cc: In function 'void update(int, int)':
a.cc:55:24: error: no match for 'operator>' (operand types are 'int' and 'std::pair<int, int>')
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |        ~~~~~~~~~~~~~~~~^~~~~~~~~~~
      |                   |              |
      |                   int            std::pair<int, int>
In file included from /usr/include/c++/14/string:48,
                 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:1:
/usr/include/c++/14/bits/stl_iterator.h:462:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  462 |     operator>(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:462:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
/usr/include/c++/14/bits/stl_iterator.h:507:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  507 |     operator>(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:507:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
/usr/include/c++/14/bits/stl_iterator.h:1714:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1714 |     operator>(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1714:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
/usr/include/c++/14/bits/stl_iterator.h:1774:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator>(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1774 |     operator>(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1774:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
In file included from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/string:51:
/usr/include/c++/14/bits/stl_pair.h:1058:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator>(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1058 |     operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1058:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'const std::pair<_T1, _T2>' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
In file included from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54:
/usr/include/c++/14/string_view:695:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  695 |     operator> (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:695:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
/usr/include/c++/14/string_view:702:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  702 |     operator> (basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:702:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
/usr/include/c++/14/string_view:710:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator>(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  710 |     operator> (__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:710:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   'std::pair<int, int>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
/usr/include/c++/14/bits/basic_string.h:3915:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3915 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3915:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
/usr/include/c++/14/bits/basic_string.h:3929:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const __cxx11::basic_string<_CharT, _Traits, _Allocator>&, const _CharT*)'
 3929 |     operator>(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3929:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'const std::__cxx11::basic_string<_CharT, _Traits, _Allocator>' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
/usr/include/c++/14/bits/basic_string.h:3942:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> bool std::operator>(const _CharT*, const __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
 3942 |     operator>(const _CharT* __lhs,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:3942:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'const _CharT*' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^
In file included from /usr/include/c++/14/bits/memory_resource.h:47,
                 from /usr/include/c++/14/string:68:
/usr/include/c++/14/tuple:2619:5: note: candidate: 'template<class ... _TElements, class ... _UElements> constexpr bool std::operator>(const tuple<_UTypes ...>&, const tuple<_Elements ...>&)'
 2619 |     operator>(const tuple<_TElements...>& __t,
      |     ^~~~~~~~
/usr/include/c++/14/tuple:2619:5: note:   template argument deduction/substitution failed:
a.cc:55:34: note:   mismatched types 'const std::tuple<_UTypes ...>' and 'int'
   55 |     if(seg[k*2+1].first>seg[k*2+2]) seg[k]=seg[k*2+1];
      |                                  ^