Submission #1086334

#	Time	Username	Problem	Language	Result	Execution time	Memory
1086334		_callmelucian	Semiexpress (JOI17_semiexpress)	C++14	100 / 100	1 ms	464 KiB

semiexpress

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

typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pl;
typedef pair<int,int> pii;
typedef tuple<int,int,int> tt;

#define all(a) a.begin(), a.end()
#define filter(a) a.erase(unique(all(a)), a.end())

ll curExtend[3003], s[3003];

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n, m, k; cin >> n >> m >> k;
    ll A, B, C; cin >> A >> C >> B;
    ll T; cin >> T;

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

    priority_queue<pl> pq;

    function<ll(int)> refine = [&] (int i) {
        if (C * s[i] + B * (curExtend[i] + 1) > T) return 0LL;
        ll extend = (T - C * s[i] - B * (curExtend[i] + 1)) / A + 1;
        return min(extend, s[i + 1] - (s[i] + curExtend[i]) - 1);
    };

    ll ans = 0;
    for (int i = 1; i <= m; i++) {
        curExtend[i] = -1, curExtend[i] += refine(i);
        ans += curExtend[i] + (i > 1);
        pq.emplace(refine(i), i);
    }

    for (int i = 0; i < k - m && pq.size(); i++) {
        ll incr, place; tie(incr, place) = pq.top(); pq.pop();
        curExtend[place] += incr, ans += incr;
        pq.emplace(refine(place), place);
    }
    cout << ans;

    return 0;
}

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