Submission #768948

#	Time	Username	Problem	Language	Result	Execution time	Memory
768948		xgon6576	Knapsack (NOI18_knapsack)	C++14	49 / 100	143 ms	262144 KiB

knapsack

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

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

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

    vector<int> v;
    vector<int> w;

    v.push_back(0);
    w.push_back(0);
    

    for (int i = 0; i < n; i++) {
        int a, b, c;
        cin >> a >> b >> c;

        for (int j = 0; j < min(c, (s/b)+1); j++) {
            v.push_back(a);
            w.push_back(b);
        }
    }

    vector<vector<int>> dp(v.size()+1, vector<int>(s+1, 0));

    for (int i = 1; i <= v.size(); i++) {
        for (int j = 0; j <= s; j++) {
            dp[i][j] = dp[i-1][j];

            if (w[i] <= j) dp[i][j] = max(dp[i][j], dp[i-1][j-w[i]] + v[i]);
        }
    }

    cout << dp[v.size()][s] << endl;

    return 0;

}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:30:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for (int i = 1; i <= v.size(); i++) {
      |                     ~~^~~~~~~~~~~

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