Submission #146470

#	Time	Username	Problem	Language	Result	Execution time	Memory
146470		Alexa2001	Kitchen (BOI19_kitchen)	C++17	100 / 100	28 ms	760 KiB

kitchen

#include <bits/stdc++.h>

using namespace std;

const int lim = 300;

int dp[lim * lim + 10];
int n, m, k;
int A[lim+2], B[lim+2];


void add(int cost, int ben)
{
    int i;
    for(i=m*lim - cost; i>=0; --i)
        dp[i+cost] = max(dp[i+cost], dp[i] + ben);
}

int main()
{
  //  freopen("kitchen2.in", "r", stdin);
    cin.tie(0); cin.sync_with_stdio(false);

    cin >> n >> m >> k;
    
    int i, sum = 0;
    
    for(i=1; i<=n; ++i) cin >> A[i], sum += A[i];
    for(i=1; i<=m; ++i) cin >> B[i];
    
    for(i=1; i<=m*lim; ++i) dp[i] = -1e9;

    for(i=1; i<=m; ++i)
        add(B[i], min(n, B[i]));
    
    for(i=1; i<=n; ++i)
        if(A[i] < k) 
        {
            cout << "Impossible\n";
            return 0;
        }

    for(i=sum; i <= m*lim; ++i)
        if(dp[i] >= k * n)
        {
            cout << i - sum << '\n';
            return 0;
        }
    cout << "Impossible\n";

    return 0;
}

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