Submission #125942

#	Time	Username	Problem	Language	Result	Execution time	Memory
125942		The_Wolfpack	Kitchen (BOI19_kitchen)	C++14	100 / 100	31 ms	760 KiB

kitchen

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

const int NMAX=305;

int n,m,k,sum;
int a[NMAX],b[NMAX],dp[NMAX*NMAX+10];

int main()
{
    ios_base::sync_with_stdio(false);
    cin>>n>>m>>k;
    for(int i=1;i<=n;i++) cin>>a[i];
    for(int i=1;i<=n;i++)
    {
        if(a[i]<k)
        {
            cout<<"Impossible"<<endl;
            return 0;
        }
        sum+=a[i];
    }
    for(int j=1;j<=m;j++) cin>>b[j];
    memset(dp, -NMAX*NMAX-1999, sizeof(dp));
    dp[0]=0;
    for(int i=1;i<=m;i++) for(int j=NMAX*NMAX;j>=b[i];j--)
    {
        dp[j]=max(dp[j],dp[j-b[i]]+min(n,b[i]));
    }
    for(int t=sum;t<=NMAX*NMAX;t++)
    {
        if(dp[t]>=n*k)
        {
            cout<<t-sum<<endl;
            return 0;
        }
    }
    cout<<"Impossible"<<endl;
    return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 22 / 22
• Subtask 3: 20 / 20
• Subtask 4: 21 / 21
• Subtask 5: 28 / 28