Submission #1189240

#	Time	Username	Problem	Language	Result	Execution time	Memory
1189240		jerzyk	Semiexpress (JOI17_semiexpress)	C++20	100 / 100	0 ms	328 KiB

semiexpress

#include <bits/stdc++.h>

using namespace std;
#define pb push_back
#define st first
#define nd second
typedef long long ll;
typedef long double ld;
const ll I = 1'000'000'000'000'000'000LL;
const int II = 2'000'000'000;
const ll M = 1'000'000'007LL;
const int N = 1'000'007;
int tab[N], cur[N];
ll A, B, C, T;
int answer = 0;

priority_queue<pair<int, int>> q;

int Dod(int i, int l, int r)
{
    ll nd = (ll)(l - 1) * B + (ll)(i - l) * C;
    if(nd > T) return 0;
    int a = min((T - nd) / A + 1LL, (ll)(r - i));
    return a;
}

void Solve()
{
    int n, m, k;
    cin >> n >> m >> k;
    cin >> A >> B >> C;
    cin >> T;
    for(int i = 1; i <= m; ++i)
    {
        cin >> tab[i];
        cur[i] = tab[i];
    }
    for(int i = 1; i < m; ++i)
    {
        int a = Dod(tab[i], tab[i], tab[i + 1]);
        answer += a;
        cur[i] = tab[i] + a;
        a = Dod(cur[i], tab[i], tab[i + 1]);
        if(a != 0)
            q.push(make_pair(a, i));
    }
    if((ll)(n - 1) * B <= T) ++answer;
    int cnt = k - m;
    while(cnt-- && (int)q.size() > 0)
    {
        int i = q.top().nd; answer += q.top().st;
        cur[i] += q.top().st;
        q.pop();
        int a = Dod(cur[i], tab[i], tab[i + 1]);
        if(a != 0)
            q.push(make_pair(a, i));
    }
    cout << answer - 1 << "\n";
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    //int t; cin >> t;
    //while(t--)
        Solve();

    return 0;
}

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