Submission #877137

#	Time	Username	Problem	Language	Result	Execution time	Memory
877137		tigar	Knapsack (NOI18_knapsack)	C++14	73 / 100	1040 ms	2652 KiB

knapsack

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

ll s, n;
ll value[100010], weight[100010], number[100010];
ll dp[2020];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    cin>>s>>n;
    for(int i=1; i<=n; i++)cin>>value[i]>>weight[i]>>number[i];
    for(int i=1; i<=number[1] and i*weight[1]<=s; i++)dp[i*weight[1]]=value[1]*i;
    for(int i=2; i<=n; i++)
    {
        for(int j=s; j>=1; j--)
        {
            int k=1;
            while(k<=number[i] and k*weight[i]<=j)
            {
                if(dp[j-k*weight[i]]!=0)dp[j]=max(dp[j-k*weight[i]]+k*value[i], dp[j]);
                if(dp[j-k*weight[i]]==0 and j==k*weight[i])dp[j]=max(dp[j-k*weight[i]]+k*value[i], dp[j]);
                k++;
            }
        }
    }
    ll rez=0;
    for(int i=1; i<=s; i++)rez=max(rez, dp[i]);
    cout<<rez;
    return 0;
}

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