Submission #499357

#	Time	Username	Problem	Language	Result	Execution time	Memory
499357		SirCovidThe19th	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	3 ms	388 KiB

semiexpress

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

#define ll long long

int main(){
    int n, m, k; ll a, b, c, t, ans = 0;
    cin >> n >> m >> k >> a >> b >> c >> t;

    set<ll> S; priority_queue<tuple<ll, ll, ll>> pq;
    
    for (int i = 1; i <= m; i++){
        ll pos; cin >> pos;
        S.insert(pos); pq.push({1e18, (pos - 1) * b, pos});
    }
    while (!pq.empty() and k){
        ll dst, ti, pos; tie(dst, ti, pos) = pq.top(); pq.pop();

        if (dst == 1e18){
            dst = min((t - ti) / a, (pos == n) ? 0 : (*S.upper_bound(pos) - pos - 1));
            if (ti > t){ k--; continue; }
        }
        ans += dst + 1; k--;
        
        pos += dst + 1; ti += (dst + 1) * c;
        dst = min((t - ti) / a, *S.lower_bound(pos) - pos - 1);
        if (dst >= 0 and ti <= t) pq.push({dst, ti, pos});
    }
    cout<<ans - 1<<endl;
}

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