Submission #826000

#	Time	Username	Problem	Language	Result	Execution time	Memory
826000		dijbkr	Knapsack (NOI18_knapsack)	C++14	17 / 100	2 ms	3668 KiB

knapsack

#include<bits/stdc++.h>
typedef long long ll;
typedef unsigned long long ull;
using namespace std;

const ll maxn=200005;

ll n,m;
ll v[2001];
ll w[2001];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin >> n >> m;
    ll sum=0;
    ll pos=1;
    for (ll i=1; i<=m; i++)
    {
        ll k;
        cin >> v[pos] >> w[pos] >> k;
        sum+=k;
        for (ll j=pos+1; j<pos+k; j++)
        {
            v[j]=v[pos];
            w[j]=w[pos];
        }
        pos=pos+k;
    }
    ll dp[m+4][n+4];
    memset(dp,0,sizeof(dp));
    for (ll j=1; j<=n; j++)
    {
        for (ll i=1; i<=sum; i++)
        {
            dp[i][j]=dp[i-1][j];
            if (j-w[i]>=0)
            {
                dp[i][j]=max(dp[i][j],dp[i-1][j-w[i]]+v[i]);
            }
        }
    }
    ll ans=0;
    for (ll i=1; i<=n; i++)
    {
        ans=max(ans,dp[sum][i]);
    }
    cout << ans;
}

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