Submission #1109317

#	Time	Username	Problem	Language	Result	Execution time	Memory
1109317		mariaclara	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	12 ms	3700 KiB

semiexpress

#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef tuple<ll,ll,ll> trio;
typedef pair<int,int> pii;
const int MAXN = 2e5+5;
const ll INF = 1e9;
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define mk make_pair
#define pb push_back
#define fr first
#define sc second

int n, m, k, v[3005], ans;
ll t, A, B, C;
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin >> n >> m >> k >> A >> B >> C >> t;
    k -= m;

    for(int i = 1; i <= m; i++)
        cin >> v[i];

    vector<int> val;

    v[m+1] = n+1;
    for(int i = 1; i <= m; i++) {
        ll tempo = (v[i] - 1) * B;
        if(tempo > t) break;

        int qtd = (t - tempo)/A;
        qtd = min(qtd, v[i+1] - v[i] - 1);
        ans += qtd+1;

        for(int j = 1, at = qtd + v[i] + 1; j <= k and at < v[i+1]; j++) {
            tempo = (v[i] - 1) * B + (at - v[i]) * C;
            if(tempo > t) break;

            qtd = (t - tempo)/A;
            qtd = min(qtd,  v[i+1] - at - 1);
            val.pb(qtd + 1);
            at += qtd + 1;
        }
    }

    sort(all(val));
    reverse(all(val));

    for(int i = 0; i < min(k, sz(val)); i++) ans += val[i];

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

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