Submission #839088

#	Time	Username	Problem	Language	Result	Execution time	Memory
839088		detroiddh	Knapsack (NOI18_knapsack)	C++17	73 / 100	173 ms	20564 KiB

knapsack

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;

const ll maxn = 2003;
const ll mod = 1e9 + 7;

struct TPair
{
   ll v , w , k;
};

ll dp[maxn][maxn] , inf = 1e18;
TPair a[maxn];

int main()
{
   ios_base::sync_with_stdio(false);
   cin.tie(nullptr);
   //freopen("","r",stdin);
   //freopen("","w",stdout);

   int s , n;
   cin>>s>>n;

   for(int i = 1 ; i <= n ; ++i)
    cin>>a[i].v>>a[i].w>>a[i].k;

   ll kq = 0;

   for(int i = 1 ; i <= s ; ++i) dp[0][i] = -inf;
   dp[0][0] = 0;

   for(int i = 1 ; i <= n ; ++i)
   {
       for(int j = 1 ; j <= s ; ++j)
       {
           dp[i][j] = -inf;
           for(int h = 0 ; h <= a[i].k ; ++h)
           {
               ll so1 = a[i].w * h , so2 = a[i].v * h;

               if(so1 > j) break;
               dp[i][j] = max(dp[i][j] , dp[i - 1][j - so1] + so2);
               kq = max(kq , dp[i][j]);
           }
       }
   }

   cout<<kq;
}

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 24 / 24
• Subtask 5: 0 / 27