Language: C++

#include <string>
#include <cstring>
#include <vector>
#include <algorithm>
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <queue>
#include <map>
#define INF 100000000
#define rep(i,a) for(int i=0;i<(a);i++)

using namespace std;
typedef long long ll;

short int dp[1001][10001];    //dp[i][j]  i番目以前の物で、重さがj以下の時の価値
int W[1001],V[1001];

int w,n;

void solve(){
    for(int i=n-1;i>=0;i--){
        for(int j=0;j<=w;j++){
            if(j-W[i]<0){
                dp[i][j]=dp[i+1][j];
            }
            else{
                dp[i][j]=max(dp[i+1][j],dp[i+1][j-W[i]]+V[i]);
            }
            
        }
    }
    
    cout<<dp[0][w]<<endl;
    for(int i=w;i>=1;i--){
        if(dp[0][i]!=dp[0][i-1]){
            cout<<i<<endl;
            break;
        }
    }
}

int main(){
    int count=1;
    while(1){
        memset(dp,0,sizeof(dp));
    
        cin>>w>>n;
        if(w==0)break;
        char a;
        rep(i,n)cin>>V[i]>>a>>W[i];
    
        cout<<"Case "<<count<<":"<<endl;
        count++;
        solve();
    }
    return 0;
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:29:29: error: no matching function for call to 'max(short int&, int)'
   29 |                 dp[i][j]=max(dp[i+1][j],dp[i+1][j-W[i]]+V[i]);
      |                          ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string: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:29:29: note:   deduced conflicting types for parameter 'const _Tp' ('short int' and 'int')
   29 |                 dp[i][j]=max(dp[i+1][j],dp[i+1][j-W[i]]+V[i]);
      |                          ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/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:4:
/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:29:29: note:   mismatched types 'std::initializer_list<_Tp>' and 'short int'
   29 |                 dp[i][j]=max(dp[i+1][j],dp[i+1][j-W[i]]+V[i]);
      |                          ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~