oj.uz

Submission #745886

# Submission time Handle Problem Language Result Execution time Memory
745886 2023-05-21T09:19:24 Z vjudge1 Kitchen (BOI19_kitchen) C++17
100 / 100
 49 ms 1036 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define fi first
#define se second

void imp() {
    cout << "Impossible";
    cout << "\n";
    exit(0);
}

int n, m, k;
vector<int> a, b;
int sum_a;

/*int try_4(int idx) {
    int pref = 0;
    for(int i = 0; i <= idx; i++) {
        pref += b[i];
    }
    if(pref < sum_a) {
        return -1;
    }
    int sum1 = 0;
    for(int i = 0; i <= idx; i++) {
        sum1 += min(n, b[idx]);
    }
    if(sum1 < n * k) {
        return -1;
    }
    return pref - sum_a;
}*/

void solve() {
    cin >> n >> m >> k;
    a.resize(n), b.resize(m);
    for(int &x : a) {
        cin >> x;
        sum_a += x;
    }
    sort(a.begin(), a.end());
    for(int &x : b) {
        cin >> x;
    }
    sort(b.begin(), b.end());
    reverse(b.begin(), b.end());
    for(int i = 0; i < n; i++) {
        if(a[i] < k) {
            imp();
        }
    }
    /*int l = -1, r = m;
    bool possible = false;
    int result = -42;
    while(l < r - 1) {
        int mid = (l + r) / 2;
        int res = try_4(mid);
        if(res != -1 && (result == -42 || result > res)) {
            result = res;
        }
        if(res != -1) {
            r = mid;
        } else {
            l = mid;
        }
    }
    if(r == m) {
        imp();
    }
    cout << result << "\n";*/
    int maxx = 300 * 300;
    vector<int> dp(1 + maxx, 0);
    vector<bool> is(1 + maxx, false);
    is[0] = true;
    for(int i = 1; i <= m; i++) {
        int val = b[i - 1];
        int other_val = min(b[i - 1], n);
        for(int j = maxx; j >= val; j--) {
            if(is[j - val]) {
                is[j] = true;
                dp[j] = max(dp[j], dp[j - val] + other_val);
            }
        }
    }
    for(int i = sum_a; i <= maxx; i++) {
        if(is[i] && dp[i] >= n * k) {
            cout << i - sum_a << "\n";
            return;
        }
    }
    imp();
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
    return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 980 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 2 ms 980 KB Output is correct
10 Correct 2 ms 980 KB Output is correct
11 Correct 2 ms 980 KB Output is correct
12 Correct 3 ms 980 KB Output is correct
13 Correct 2 ms 980 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 980 KB Output is correct
2 Correct 18 ms 980 KB Output is correct
3 Correct 34 ms 980 KB Output is correct
4 Correct 37 ms 980 KB Output is correct
5 Correct 33 ms 1036 KB Output is correct
6 Correct 16 ms 980 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 980 KB Output is correct
2 Correct 3 ms 980 KB Output is correct
3 Correct 3 ms 980 KB Output is correct
4 Correct 4 ms 980 KB Output is correct
5 Correct 0 ms 212 KB Output is correct

Subtask #5
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 980 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 980 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 980 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 980 KB Output is correct
9 Correct 2 ms 980 KB Output is correct
10 Correct 2 ms 980 KB Output is correct
11 Correct 2 ms 980 KB Output is correct
12 Correct 3 ms 980 KB Output is correct
13 Correct 2 ms 980 KB Output is correct
14 Correct 24 ms 980 KB Output is correct
15 Correct 18 ms 980 KB Output is correct
16 Correct 34 ms 980 KB Output is correct
17 Correct 37 ms 980 KB Output is correct
18 Correct 33 ms 1036 KB Output is correct
19 Correct 16 ms 980 KB Output is correct
20 Correct 4 ms 980 KB Output is correct
21 Correct 3 ms 980 KB Output is correct
22 Correct 3 ms 980 KB Output is correct
23 Correct 4 ms 980 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 21 ms 980 KB Output is correct
26 Correct 19 ms 980 KB Output is correct
27 Correct 15 ms 980 KB Output is correct
28 Correct 39 ms 980 KB Output is correct
29 Correct 31 ms 980 KB Output is correct
30 Correct 49 ms 980 KB Output is correct