Submission #598991

#	Time	Username	Problem	Language	Result	Execution time	Memory
598991		Hanksburger	Knapsack (NOI18_knapsack)	C++17	100 / 100	61 ms	3716 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
vector<pair<int, int> > v[2005];
int dp[2005];
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int s, n;
    cin >> s >> n;
    for (int i=1; i<=n; i++)
    {
        int a, b, c;
        cin >> a >> b >> c;
        v[b].push_back({a, c});
    }
    for (int i=1; i<=s; i++)
    {
        sort(v[i].rbegin(), v[i].rend());
        int cnt=s/i;
        for (int j=0; j<v[i].size(); j++)
        {
            while (cnt && (v[i][j].second--))
            {
                for (int k=s; k>=i; k--)
                    dp[k]=max(dp[k], dp[k-i]+v[i][j].first);
                cnt--;
            }
            if (!cnt)
                break;
        }
    }
    cout << dp[s];
    return 0;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:22:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |         for (int j=0; j<v[i].size(); j++)
      |                       ~^~~~~~~~~~~~

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