Submission #1308190

#	Time	Username	Problem	Language	Result	Execution time	Memory
1308190		shirokito	Semiexpress (JOI17_semiexpress)	C++20	48 / 100	595 ms	327680 KiB

semiexpress

#include <bits/stdc++.h>
using namespace std;

#define all(a) (a).begin(), (a).end()

using ll = long long;

const int N = 1e5 + 24;

int n, m, k, s[N];
ll A, B, C, maxTime;

void solve() {
    cin >> n >> m >> k;
    cin >> A >> B >> C;
    cin >> maxTime;

    for (int i = 1; i <= m; i++) {
        cin >> s[i];
    }

    s[m + 1] = n + 1;

    ll ans = 0;
    vector<ll> gain;

    for (int i = 1; i <= m; i++) {
        ll L = s[i], R = s[i + 1] - 1;

        for (ll cnt = 0, l = L; l <= R; cnt++) {
            ll current = (L - 1) * B + (l - L) * C;
            if (current > maxTime) break;

            ll r = min(R, (maxTime - current + l * A) / A);
            if (r < l) break;

            if (cnt == 0) {
                ans += r - l + 1;
            }
            else {
                // cout << l << ' ' << r << '\n';
                gain.push_back(r - l + 1);
            }

            l = r + 1;
        }
    }

    sort(all(gain));

    int cntGet = min((int)gain.size(), k - m);

    while (cntGet--) {
        ll g = gain.back(); gain.pop_back();
        ans += g;
    }

    cout << ans - 1 << '\n';
}

signed main() {
    cin.tie(0) -> sync_with_stdio(0);

    int T = 1; // cin >> T;
    while (T--) {
        solve();
    }
}

• Subtask 1: 18 / 18
• Subtask 2: 30 / 30
• Subtask 3: 0 / 52