Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <cmath>
#include <cstring>
#include <iomanip>
#include <random>
#include <chrono>
#include <queue>
#include <ctime>
using namespace std;
typedef long long ll;
typedef pair<int, int> PII;
typedef pair<ll, ll> PLL;
#define fs first
#define sc second
#define INF 1000000000
#define MOD 1000000007
#define EPS 0.00000001

int main() {
    int N, D; cin >> N >> D;
    vector<int> W(N);
    vector<int> V(N);
    int w1 = 0;
    for(int i=0; i<N; i++){
        cin >> W[i] >> V[i];
        if(i==0) w1 = W[0];
        W[i] -= w1;
    }
    
    vector<vector<vector<int>>> dp(N+1, vector<vector<int>>(N+1, vector<int>(10)));
    for(int i=0; i<N; i++){
        for(int j=0; j<=i; j++){
            for(int k=0; k<10; k++){
                if(k-W[i] >= 0) dp[i+1][j+1][k] = max(dp[i][j+1][k], dp[i][j][k-W[i]] + V[i]);
                else dp[i+1][j+1][k] = dp[i][j+1][k];
            }
        }
    }
    
    ll ans = 0;
    for(int j=0; j<=N; j++){
        for(int k=0; k<10; k++){
            if(k + w1 * j <= D) ans = max(dp[N][j][k] , ans);
        }
    }
    cout << ans << endl;
    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:47:42: error: no matching function for call to 'max(__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type&, ll&)'
   47 |             if(k + w1 * j <= D) ans = max(dp[N][j][k] , ans);
      |                                       ~~~^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 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_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:47:42: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   47 |             if(k + w1 * j <= D) ans = max(dp[N][j][k] , ans);
      |                                       ~~~^~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:3:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:47:42: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   47 |             if(k + w1 * j <= D) ans = max(dp[N][j][k] , ans);
      |                                       ~~~^~~~~~~~~~~~~~~~~~~