Submission #702721

#	Time	Username	Problem	Language	Result	Execution time	Memory
702721		stevancv	Semiexpress (JOI17_semiexpress)	C++14	100 / 100	13 ms	4552 KiB

semiexpress

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 1e6 + 2;
const int inf = 2e9;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int m, k;
    ll n, a, b, c, t;
    cin >> n >> m >> k >> a >> b >> c >> t;
    vector<ll> v(m);
    for (int i = 0; i < m; i++) {
        cin >> v[i];
        v[i] -= 1;
    }
    ll ans = 0;
    vector<ll> o;
    for (int i = 0; i < m - 1; i++) {
        if (b * v[i] <= t) ans += 1;
        else break;
        ll nxt = (t + v[i] * (a - b)) / a + 1;
        ans += min(nxt, v[i + 1]) - v[i] - 1;
        for (int j = 0; j < k - m; j++) {
            if (nxt >= v[i + 1]) break;
            if (b * v[i] + c * (nxt - v[i]) > t) break;
            ll gde = (t - b * v[i] - c * (nxt - v[i]) + a * nxt) / a;
            smin(gde, v[i + 1] - 1);
            o.push_back(gde - nxt + 1);
            nxt = gde + 1;
        }
    }
    if (b * v.back() <= t) ans += 1;
    sort(o.rbegin(), o.rend());
    for (int i = 0; i < min((int) o.size(), k - m); i++)
        ans += o[i];
    cout << ans - 1 << en;
    return 0;
}

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