Submission #975625

#	Time	Username	Problem	Language	Result	Execution time	Memory
975625		vjudge1	Knapsack (NOI18_knapsack)	C++17	29 / 100	2 ms	1992 KiB

knapsack

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

#define ll long long
#define v(a) vector<a>

int main(){
    ll s, n; cin >> s >> n;
    v(v(ll)) dp(n, v(ll)(s+1, 0));
    v(ll) val(n), w(n), k(n);
    for(int i = 0; i < n; i++) cin >> val[i] >> w[i] >> k[i];
    
    for(int j = 0; j <= s; j++){
        if(j >= w[0]){
            ll pos = j/w[0];
            // cout << pos << '\n';
            if(pos > k[0]) pos = k[0];
            dp[0][j] = val[0]*pos;
        }
    } 

    for(int i = 1; i < n; i++){
        for(int j = 0; j <= s; j++){
            dp[i][j] = dp[i-1][j];
            // if(i == 2 && j == s) cout << dp[i][j] << " " << dp[i-1][j] << endl;
            if(j >= w[i]){
                ll pos = j/w[i];
                if(pos > k[i]){
                    pos = k[i];
                }
                // cout << (j-pos*w[i]) << endl;
                dp[i][j] = max(dp[i][j], dp[i-1][j-(pos*w[i])] + val[i]*pos);
            }
        }
    }
    ll ans = 0;
    // for(int i = 0; i < n; i++){
    //     for(int j = 0; j <= s; j++){
    //         cout << dp[i][j] << " ";
    //     }

    //     cout << endl;
    // }
    for(int j = 0; j <= s; j++) ans = max(ans, dp[n-1][j]);
    cout << ans;
}

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