Language: C++

/*
* @Author: _dp95
* @Date:   2019-12-09 15:21:04
*/
#include "bits/stdc++.h"
using namespace std ;

#define timesaver ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);

typedef long long ll ;
typedef long double ldb ;

#define mp make_pair
#define pb push_back
#define F first
#define S second
#define nl '\n'

#define all( x ) x.begin(),x.end() 
#define sz( x ) ( int )( x ).size( )
#define mem( a, val ) memset(a, val, sizeof( a ) )
#define deci( x ) cout<<fixed<<setprecision( x );
#define bitcount( x ) __builtin_popcountll( x )

const int dx[8] = {-1, -1, -1, 0, 1, 1, 1, 0};
const int dy[8] = {-1, 0, 1, 1, 1, 0, -1, -1};

const int MAX = 2*1000 + 10 ;
const ll INF = 1e18 ;
const int MOD = 1e9 + 7 ;

ll n, c, mx, v_val[ MAX ], w_val[ MAX ];
ll dp[ 100010 ][ 101 ] ;

ll sol( ll val, ll ind ){
  if( val < 0 )
    return MOD ;
  if( val == 0 )
    return 0 ;
  if( ind < 0 ){
    if( val )
      return MOD ;
    return 0 ;
  }
  if( dp[ val ][ ind ] != INF )
    return dp[ val ][ ind ] ;
  ll &ans = dp[ val ][ ind ] ;
  for( ll i = ind ; i >= 0 ; i-- )
    ans = min( ans, sol( val - v_val[i], i-1 ) + w_val[ i ] ) ;
  return ans ;
}

int main( ){
  timesaver ;
  cin >> n >> c ;
  for( ll i = 0 ; i < n ; i++ ){
    cin >> w_val >> v_val[i] ;
    mx += v_val[i] ;
  }
  ll i ;
  for( int i = 0 ; i < n ; i++ ){
    for( int j = 0 ; j <= mx  ; j++ )
      dp[j][i] = INF ;
  }
  for( i = mx ; i >= 0 ; i-- ){
    if( sol( i, n-1 ) <= c )
      break ;
  }
  cout << i << nl ;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:57:9: error: no match for 'operator>>' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'll [2010]' {aka 'long long int [2010]'})
   57 |     cin >> w_val >> v_val[i] ;
      |     ~~~ ^~ ~~~~~
      |     |      |
      |     |      ll [2010] {aka long long int [2010]}
      |     std::istream {aka std::basic_istream<char>}
In file included from /usr/include/c++/14/sstream:40,
                 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,
                 from a.cc:5:
/usr/include/c++/14/istream:170:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  170 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:170:7: note:   conversion of argument 1 would be ill-formed:
a.cc:57:12: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'll*' {aka 'long long int*'}
   57 |     cin >> w_val >> v_val[i] ;
      |            ^~~~~
/usr/include/c++/14/istream:174:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  174 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:174:7: note:   conversion of argument 1 would be ill-formed:
a.cc:57:12: error: invalid conversion from 'll*' {aka 'long long int*'} to 'short int' [-fpermissive]
   57 |     cin >> w_val >> v_val[i] ;
      |            ^~~~~
      |            |
      |            ll* {aka long long int*}
a.cc:57:12: error: cannot bind rvalue '(short int)((ll*)(& w_val))' to 'short int&'
/usr/include/c++/14/istream:177:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  177 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:177:7: note:   conversion of argument 1 would be ill-formed:
a.cc:57:12: error: invalid conversion from 'll*' {aka 'long long int*'} to 'short unsigned int' [-fpermissive]
   57 |     cin >> w_val >> v_val[i] ;
      |            ^~~~~
      |            |
      |            ll* {aka long long int*}
a.cc:57:12: error: cannot bind rvalue '(short unsigned int)((ll*)(& w_val))' to 'short unsigned int&'
/usr/include/c++/14/istream:181:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  181 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:181:7: note:   conversion of argument 1 would be ill-formed:
a.cc:57:12: error: invalid conversion from 'll*' {aka 'long long int*'} to 'int' [-fpermissive]
   57 |     cin >> w_val >> v_val[i] ;
      |            ^~~~~
      |            |
      |            ll* {aka long long int*}
a.cc:57:12: error: cannot bind rvalue '(int)((ll*)(& w_val))' to 'int&'
/usr/include/c++/14/istream:184:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  184 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:184:7: note:   conversion of argument 1 would be ill-formed:
a.cc:57:12: error: invalid conversion from 'll*' {aka 'long long int*'} to 'unsigned int' [-fpermissive]
   57 |     cin >> w_val >> v_val[i] ;
      |            ^~~~~
      |            |
      |            ll* {aka long long int*}
a.cc:57:12: error: cannot bind rvalue '(unsigned int)((ll*)(& w_val))' to 'unsigned int&'
/usr/include/c++/14/istream:188:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  188 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:188:7: note:   conversion of argument 1 would be ill-formed:
a.cc:57:12: error: invalid conversion from 'll*' {aka 'long long int*'} to 'long int' [-fpermissive]
   57 |     cin >> w_val >> v_val[i] ;
      |            ^~~~~
      |            |
      |            ll* {aka long long int*}
a.cc:57:12: error: cannot bind rvalue '(long int)((ll*)(& w_val))' to 'long int&'
/usr/include/c++/14/istream:192:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  192 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:192:7: note:   conversion of argument 1 would be ill-formed:
a.cc:57:12: error: invalid conversion from 'll*' {aka 'long long int*'} to 'long unsigned int' [-fpermissive]
   57 |     cin >> w_val >> v_val[i] ;
      |            ^~~~~
      |            |
      |            ll* {aka long long int*}
a.cc:57:12: error: cannot bind rvalue '(long unsigned int)((ll*)(& w_val))' to 'long unsigned int&'
/usr/include/c++/14/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  199 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:199:7: note:   conversion of argument 1 would be ill-formed:
a.cc:57:12: error: invalid conversion from 'll*' {aka 'long long int*'} to 'long long int' [-fpermissive]
   57 |     cin >> w_val >> v_val[i] ;
      |            ^~~~~
      |            |
      |            ll* {aka long long int*}
a.cc:57:12: error: cannot bind rvalue '(long long int)((ll*)(& w_val))' to 'long long int&'
/usr/include/c++/14/istream:203:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  203 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:203:7: note:   conversion of argument 1 would be ill-formed:
a.cc:57:12: error: invalid conversion from 'll*' {aka 'long long int*'} to 'long long unsigned int' [-fpermissive]
   57 |     cin >> w_val >> v_val[i] ;
      |            ^~~~~
      |            |
      |            ll* {aka long long int*}
a.cc:57:12: error: cannot bind rvalue '(long long unsigned int)((ll*)(& w_val))' to 'long long unsigned int&'
/usr/include/c++/14/istream:328:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  328 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/14/istream:328:7: note:   conversion of argument 1 would be ill-formed:
a.cc:57:12: error: cannot bind non-const lvalue reference of type 'void*&' to an rvalue of type 'void*'
   57 |     cin >> w_val >> v_val[i] ;
      |            ^~~~~
/usr/include/c++/14/istream:219:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(float&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  219 |       operator>>(float& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:219:25: note:   no known conversion for argument 1 from 'll [2010]' {aka 'long long int [2010]'} to 'float&'
  219 |       operator>>(float& __f)
      |                  ~~~~~~~^~~
/usr/include/c++/14/istream:223:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  223 |       operator>>(double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:223:26: note:   no known conversion for argument 1 from 'll [2010]' {aka 'long long int [2010]'} to 'double&'
  223 |       operator>>(double& __f)
      |                  ~~~~~~~~^~~
/usr/include/c++/14/istream:227:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long double&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  227 |       operator>>(long double& __f)
      |       ^~~~~~~~
/usr/include/c++/14/istream:227:31: note:   no known conversion for argument 1 from 'll [2010]' {aka 'long long int [2010]'} to 'long double&'
  227 |       operator>>(long double& __f)
      |                  ~~~~~~~~~~~~~^~~
/usr/include/c++/14/istream:122:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__istream_type& (*)(__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]'
  122 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |       ^~~~~~~~
/usr/include/c++/14/istream:122:36: note:   no known conversion for argument 1 from 'll [2010]' {aka 'long long int [2010]'} to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_istream<char>&)'}
  122 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |                  ~~~~~~~~~~~~~~~~~~^~~~~