Language: C++

#include <iostream>
#include <string>
using namespace std;

int main()
{
    int l[10] , v1 , v2 , n , cnt;
    double d , t;
    char ch;
    while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
        n=0;
        for(int i=0;i<10;i++){
            n+=l[i];
        }
        t=n/(v1+v2);
        d=v1*t;    //列車1の動く距離
        cnt=0;
        while(d>0){
            d -= l[cnt];
            cnt++;
        }
        cout << cnt << endl;
    }
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:127: error: no match for 'operator!=' (operand types are 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} and 'int')
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^~
      |                                                                                                                          |
      |                                                                                                                          std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}
a.cc:10:127: note: candidate: 'operator!=(int, int)' (built-in)
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |                                                                                                                               ^
a.cc:10:127: note:   no known conversion for argument 1 from 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} to 'int'
In file included from /usr/include/c++/14/iosfwd:42,
                 from /usr/include/c++/14/ios:40,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/postypes.h:197:5: note: candidate: 'template<class _StateT> bool std::operator!=(const fpos<_StateT>&, const fpos<_StateT>&)'
  197 |     operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
      |     ^~~~~~~~
/usr/include/c++/14/bits/postypes.h:197:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/14/cstdio:42,
                 from /usr/include/c++/14/ext/string_conversions.h:45,
                 from /usr/include/c++/14/bits/basic_string.h:4154,
                 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:
a.cc:10:129: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::fpos<_StateT>'
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |                                                                                                                                 ^~~
In file included from /usr/include/c++/14/string:43:
/usr/include/c++/14/bits/allocator.h:243:5: note: candidate: 'template<class _T1, class _T2> bool std::operator!=(const allocator<_CharT>&, const allocator<_T2>&)'
  243 |     operator!=(const allocator<_T1>&, const allocator<_T2>&)
      |     ^~~~~~~~
/usr/include/c++/14/bits/allocator.h:243:5: note:   template argument deduction/substitution failed:
a.cc:10:129: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::allocator<_CharT>'
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |                                                                                                                                 ^~~
In file included from /usr/include/c++/14/string:48:
/usr/include/c++/14/bits/stl_iterator.h:455:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_Iterator>&)'
  455 |     operator!=(const reverse_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:455:5: note:   template argument deduction/substitution failed:
a.cc:10:129: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::reverse_iterator<_Iterator>'
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |                                                                                                                                 ^~~
/usr/include/c++/14/bits/stl_iterator.h:500:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  500 |     operator!=(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:500:5: note:   template argument deduction/substitution failed:
a.cc:10:129: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::reverse_iterator<_Iterator>'
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |                                                                                                                                 ^~~
/usr/include/c++/14/bits/stl_iterator.h:1686:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1686 |     operator!=(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1686:5: note:   template argument deduction/substitution failed:
a.cc:10:129: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::move_iterator<_IteratorL>'
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |                                                                                                                                 ^~~
/usr/include/c++/14/bits/stl_iterator.h:1753:5: note: candidate: 'template<class _Iterator> constexpr bool std::operator!=(const move_iterator<_IteratorL>&, const move_iterator<_IteratorL>&)'
 1753 |     operator!=(const move_iterator<_Iterator>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1753:5: note:   template argument deduction/substitution failed:
a.cc:10:129: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::move_iterator<_IteratorL>'
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |                                                                                                                                 ^~~
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:1052:5: note: candidate: 'template<class _T1, class _T2> constexpr bool std::operator!=(const pair<_T1, _T2>&, const pair<_T1, _T2>&)'
 1052 |     operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_pair.h:1052:5: note:   template argument deduction/substitution failed:
a.cc:10:129: note:   'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} is not derived from 'const std::pair<_T1, _T2>'
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |                                                                                                                                 ^~~
In file included from /usr/include/c++/14/bits/basic_string.h:47:
/usr/include/c++/14/string_view:651:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(basic_string_view<_CharT, _Traits>, basic_string_view<_CharT, _Traits>)'
  651 |     operator!=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:651:5: note:   template argument deduction/substitution failed:
a.cc:10:129: note:   'std::basic_istream<char>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |                                                                                                                                 ^~~
/usr/include/c++/14/string_view:658:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(basic_string_view<_CharT, _Traits>, __type_identity_t<basic_string_view<_CharT, _Traits> >)'
  658 |     operator!=(basic_string_view<_CharT, _Traits> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:658:5: note:   template argument deduction/substitution failed:
a.cc:10:129: note:   'std::basic_istream<char>' is not derived from 'std::basic_string_view<_CharT, _Traits>'
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |                                                                                                                                 ^~~
/usr/include/c++/14/string_view:666:5: note: candidate: 'template<class _CharT, class _Traits> constexpr bool std::operator!=(__type_identity_t<basic_string_view<_CharT, _Traits> >, basic_string_view<_CharT, _Traits>)'
  666 |     operator!=(__type_identity_t<basic_string_view<_CharT, _Traits>> __x,
      |     ^~~~~~~~
/usr/include/c++/14/string_view:666:5: note:   template argument deduction/substitution failed:
a.cc:10:129: note:   mismatched types 'std::basic_string_view<_CharT, _Traits>' and 'int'
   10 |     while(cin>>l[0]>>ch>>l[1]>>ch>>l[2]>>ch>>l[3]>>ch>>l[4]>>ch>>l[5]>>ch>>l[6]>>ch>>l[7]>>ch>>l[8]>>ch>>l[9]>>ch>>v1>>ch>>v2 !=EOF){
      |