Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n,k;cin>>n>>k;
  vector<long long int>a(n);
  for(int i=0;i<n;i++) cin>>a.at(i);
  sort(a.begin(),a.end());
  long long int sum=0;
  int t=-1;
  for(int i=0;i<n;i++){
    sum+=a.at(i);
    if(sum>=k){
      t=i;
      break;
    }
  }
  if(t==-1){
    cout<<n<<endl;
  }
  else if(t==0){
    cout<<n<<endl;
  }
  else{
    int c=n;
    for(int i=0;i<n;i++){
      if(a.at(i)>=k){
        c=i;
        break;
       }
    }
    long long int dp[c-t+1][k];
        for(int i=0;i<c-t+1;i++){
            for(int j=0;j<k;j++){
                dp[i][j]=-1;
            }
        }
    dp[0][0]=0;
    int ret=0;
    for(int i=0;i<c-t;i++){
      for(int j=0;j<k;j++){
        if(dp[i][j]>=0){
          dp[i+1][j]=dp[i][j];
          if(j+a.at(i+t)<k){
            dp[i+1][j+a.at(i+t)]=dp[i][j]+a.at(i+t);
            ret=max(dp[i+1][j+a.at(i+t)],ret);
          }
        }
      }
    }
    int y;
    for(int i=0;;i++){
      if(a.at(i)>=k-ret){
        y=i;
        break;
      }
    }
    cout<<y<<endl;
  }
}
      
    

Compiler output:
a.cc: In function 'int main()':
a.cc:45:20: error: no matching function for call to 'max(long long int&, int&)'
   45 |             ret=max(dp[i+1][j+a.at(i+t)],ret);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 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:45:20: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   45 |             ret=max(dp[i+1][j+a.at(i+t)],ret);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
/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:
/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:45:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   45 |             ret=max(dp[i+1][j+a.at(i+t)],ret);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~