Revise paste Untitled

#include <iostream>
#include <map>
#include <cstring>
#include <vector>
using ll=long long;

using namespace std;

int n,m,k;
int cost[25];
int cw[25][25];
int vw[25][25];
int dp[1006][22][3];
int rec(int money_left, int at, bool locked) {
    if(at == -1 or money_left == 0) {
        return 0;
    }
    if(dp[money_left][at][locked] != -1) {
        return dp[money_left][at][locked];
    }
    int result = 0;
    result = max(result, rec(money_left, at - 1, true));
    
    if(locked) {
        int spend = money_left - cost[at];
        if(spend >= 0) {
            for(int j = 0; j < m; j++) {
                int tmp_spend = spend - cw[at][j];
                if(tmp_spend >= 0) {
                    result = max(result, rec(tmp_spend, at, false) + vw[at][j]);
                    
                    result = max(result, rec(tmp_spend, at - 1, true) + vw[at][j]);
                }
            }
        }
    }
    else {
        for(int j = 0; j < m; j++) {
            int spend = money_left - cw[at][j];
            if(spend >= 0) {
                result = max(result, rec(spend, at, locked) + vw[at][j]);
                result = max(result, rec(spend, at - 1, true) + vw[at][j]);
            }
        }
    }
    return dp[money_left][at][locked] = result;
}

int main()
{
    int t;
    cin>>t;
    while(t--)
    {
        memset(dp,-1,sizeof dp);
        cin>>n>>m>>k;
        for(int i=0;i<n;i++){
            cin>>cost[i];
        
        }
        for(int i=0;i<n;i++)
        {
            for(int j=0;j<m;j++)
            {
                cin >> cw[i][j];
            }
           
        }
        for(int i = 0; i < n; i++) {
            for(int j =0 ; j < m; j++) {
                cin >> vw[i][j];
            }
        }
        cout<<rec(k, n- 1,true)<<endl;
    }
    return 0;
}