Submission #975515

#	Time	Username	Problem	Language	Result	Execution time	Memory
975515		vjudge1	Knapsack (NOI18_knapsack)	C++17	49 / 100	166 ms	262144 KiB

knapsack

#include<bits/stdc++.h>
using namespace std;
#define int long long

int s, n, dp[100005][2005] = {0};
signed main(){
    cin >> s >> n;
    if(n == 1){
        int v, w, k; cin >> v >> w >> k;
        if(s / w >= k){
            cout << k * v;
        }else{
            cout << (s / w) * v;
        }
        return 0;
    }
    int idx = 0;
    for(int x = 1; x <= n; x++){
        int v, w, k; cin >> v >> w >> k;
        for(int i = idx + 1; i <= idx + k; i++){
         //   cout << i << " -> ";
            for(int j = 1; j <= s; j++){
                dp[i][j] = dp[i - 1][j];
                if(w <= j){
                    dp[i][j] = max(dp[i][j], dp[i - 1][j - w] + v);
                }
             //   cout << dp[i][j] << ' ';
            }// cout << endl;
        }
        idx += k;
    }
    cout << dp[idx][s];
}

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