Submission #1181521

#	Time	Username	Problem	Language	Result	Execution time	Memory
1181521		qwusha	Kitchen (BOI19_kitchen)	C++20	51 / 100	27 ms	1096 KiB

kitchen

#include <bits/stdc++.h>
using namespace std;
/*
#pragma GCC optimize("O3")
#include <bitset>
#pragma GCC target("avx2")*/
#define fi first
#define se second
#define int long long
typedef long long ll;
typedef long double ld;
mt19937 rnd(chrono::high_resolution_clock::now().time_since_epoch().count());
int inf = 1e15;


signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n, m, k;
    cin >> n >> m >> k;
    vector<int> a(n);
    vector<int> b(m);
    for (int i =0 ; i < n; i++) {
        cin >> a[i];
    }
    for (int i = 0; i < m; i++) {
        cin >> b[i];
    }
    int sum = 0;
    bool ok = 1;
    for (int i = 0; i < n; i++) {
        sum += a[i];
        if (a[i] < k)
            ok = 0;
    }
    vector<int> s1, s2;
    for (int i = 0; i < m; i++) {
        if (b[i] >= k)
            s1.push_back(b[i]);
        if (b[i] >= n)
            s2.push_back(b[i]);
    }
    if (!ok) {
        cout << "Impossible" << '\n';
        return 0;
    }
    vector<int> dp(300 * 300 + 100, -1);
    dp[0] = 0;
    for (int i = 0; i < s1.size(); i++) {
        int val = s1[i];
        for (int j = dp.size() - 1; j >= val; j--) {
            if (dp[j - val] != -1)
                dp[j] = max(dp[j], dp[j - val] + 1);
        }
    }
    int mini = inf;
    for (int j = sum; j < dp.size(); j++) {
        if (dp[j] > k) {
            mini = j;
            break;
        }
    }
    dp.assign(300*300+100, -1);
    dp[0] = 0;
    for (int i = 0; i < s2.size(); i++) {
        int val = s2[i];
        for (int j = dp.size() - 1; j >= val; j--) {
            if (dp[j - val] != -1)
                dp[j] = max(dp[j], dp[j - val] + 1);
        }
    }
    for (int j = sum; j < dp.size(); j++) {
        if (dp[j] >= k) {
            mini = min(mini,j);
            break;
        }
    }
    if (mini == inf) {
        cout << "Impossible" << '\n';
    } else {
        cout << mini - sum << '\n';
    }




}

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