DP-bookShop.cpp

 
#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define fr(a,b) for(int i = a; i < b; i++)
#define rep(i,a,b) for(int i = a; i < b; i++)
#define mod 1000000007
#define inf (1LL<<60)
#define all(x) (x).begin(), (x).end()
#define prDouble(x) cout << fixed << setprecision(10) << x
#define triplet pair<ll,pair<ll,ll>>
#define fast_io ios_base::sync_with_stdio(false);cin.tie(NULL)
using namespace std;
 
 
int main() {
   fast_io;
   ll t,n,m,x,i,j,k,q;
   //cin >> t;
   t = 1;
   while(t--)
   {
        
        cin >> n >> x;
        vector<int> price(n+1),pages(n+1);
         int dp[n+1][x+1];
        for(int i=1;i<=n;i++){

            cin>>price[i];
        }
        for(int i=1;i<=n;i++){

            cin>>pages[i];
        }
        for(int i=0;i<=n;i++){

            for(int money=0;money<=x;money++){

                   if(money==0 or i==0){
                       dp[i][money]=0;
                   }
                   else{
   
                          int op1= (i==1)?0:dp[i-1][money];
                int op2=(money<price[i])?0:pages[i]+dp[i-1][money-price[i]];
                dp[i][money]=max(op1,op2);

                   }
            
            }
        }
        cout<<dp[n][x];
       
 
    
   }
   return 0;
}