Submission #136759

#	Time	Username	Problem	Language	Result	Execution time	Memory
136759		azatega	Kitchen (BOI19_kitchen)	C++11	50 / 100	146 ms	110884 KiB

kitchen

#include <iostream>

using namespace std;

int cost[310];
int chefs[310];
int memo[310][91000];
int n, m, k, sum = 0, sum_of_chefs = 0;

int main()
{
    cin >> n >> m >> k;
    for(int i = 0; i < n; i++){
        cin >> cost[i];
        sum += cost[i];
    }
    for(int i = 0; i < m; i++){
        cin >> chefs[i];
        sum_of_chefs += chefs[i];
    }

    if(sum_of_chefs < sum || m < k){
        cout << "Impossible" << endl;
        return 0;
    }

    for(int i = 0; i < n; i++){
        if(cost[i] < k){
            cout << "Impossible" << endl;
            return 0;
        }
    }

    for(int i = 0; i < 310; i++)
        for(int j = 0; j < 91000; j++)
            memo[i][j] = -1;

    for(int i = 0; i < 310; i++)
        memo[i][0] = 0;

    int najbolje = 99999997;

    for(int i = 1; i <= m; i++){
        for(int j = chefs[i - 1]; j <= sum_of_chefs; j++){
            if(memo[i - 1][j] != -1)
                memo[i][j] = memo[i - 1][j];
            if(memo[i - 1][j - chefs[i - 1]] != -1)
                memo[i][j] = max(memo[i][j], memo[i - 1][j - chefs[i - 1]] + min(chefs[i - 1], n));

            if(j >= sum && memo[i][j] >= k*n){
                najbolje = min(najbolje, j - sum);
            }
        }
    }

    if(najbolje != 99999997)
        cout << najbolje << endl;
    else
        cout << "Impossible" << endl;

    return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 0 / 22
• Subtask 3: 20 / 20
• Subtask 4: 21 / 21
• Subtask 5: 0 / 28