Submission #938739

#	Time	Username	Problem	Language	Result	Execution time	Memory
938739		vjudge1	Kitchen (BOI19_kitchen)	C++17	29 / 100	72 ms	3672 KiB

kitchen

#include <bits/stdc++.h>
#define int long long
#define M 302
 
using namespace std;
 
int n, m, k, A = 0, B = 0, res = LLONG_MAX;
bool flag = false;
vector<int> a, b;
vector<vector<bool>> dp;
 
signed main() {
    cin >> n >> m >> k;
    a = vector<int>(n), b = vector<int>(m);
    for(int i = 0; i < n; i++) {
        cin >> a[i];
        A += a[i];
        if(a[i] < k) flag = true;
    }
    for(int i = 0; i < m; i++) {
        cin >> b[i];
        B += b[i];
    }
    if(k > 1 || m <= 15) {
        // try every subset
    vector<int> diff;
    bitset<M> bin;
    int temp, sum;
    bool check;
    for(int i = 0; i < (1 << m); i++) {
        bin = bitset<M>(i), diff = vector<int>(n, k), sum = 0, check = true;
        for(int j = 0; j < M; j++) {
            if(bin[j]) {
                sum += b[j];
                temp = b[j];
                for(int k = 0; k < n && temp; k++) {
                    if(diff[k]) {
                        diff[k]--;
                        temp--;
                    }
                }
            }
        }
        for(int j = 0; j < n; j++) {
            if(diff[j]) {
                check = false;
                break;
            }
        }
        if(check && sum >= A) res = min(res, sum - A);
    }
    if(flag || res == LLONG_MAX) cout << "Impossible\n";
    else cout << res << "\n";
    } else {
    dp = vector<vector<bool>>(m + 1, vector<bool>(B + 1, false));
    dp[0][0] = true;
    for(int i = 1; i <= m; i++) {
        for(int j = 0; j <= B; j++) {
            if(j >= b[i - 1]) dp[i][j] = dp[i - 1][j] | dp[i - 1][j - b[i - 1]];
            //cout << dp[i][j] << " ";
        }
        //cout << "\n";
    }
    //
    int res = LLONG_MAX;
    for(int i = 0; i <= m; i++) {
        for(int j = A; j <= B; j++) {
            if(dp[i][j]) res = min(res, j - A);
        }
    }
    if(res == LLONG_MAX) cout << "Impossible\n";
    else cout << res << "\n";}
}

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