Submission #1335295

#	Time	Username	Problem	Language	Result	Execution time	Memory
1335295		isaacsun	Knapsack (NOI18_knapsack)	C++20	73 / 100	1074 ms	456 KiB

knapsack

// Source: https://usaco.guide/general/io

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

int main() {
	ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int maxWeight, numItems;
    cin >> maxWeight >> numItems;

    vector<int> dp(maxWeight + 1);

    for(int i = 0; i < numItems; i++) {
        int value, weight, copies;
        cin >> value >> weight >> copies;

        copies = min(copies, maxWeight / weight);

        int part = 1;
        while(copies > 0) {
            int size = min(part, copies);

            int w = weight * size;
            int v = value * size;
            
            for(int j = maxWeight; j - w >= 0; j--) {
                dp[j] = max(dp[j], dp[j - w] + v);
            }

            copies -= part;
            part <<= 1;
        }
    }

    cout << dp[maxWeight];
}

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