Submission #624136

#	Time	Username	Problem	Language	Result	Execution time	Memory
624136		Hanksburger	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	1 ms	340 KiB

semiexpress

#include <bits/stdc++.h>
using namespace std;
priority_queue<pair<long long, pair<long long, long long> > > pq;
long long s[3005];
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    long long n, m, k, a, b, c, t, ans=-1;
    cin >> n >> m >> k >> a >> b >> c >> t;
    for (long long i=1; i<=m; i++)
        cin >> s[i];
    for (long long i=1; i<m; i++)
    {
        if (b*(s[i]-1)>t)
            break;
        long long x=min(s[i+1], (t-b*(s[i]-1)+a*(s[i]+1))/a);
        long long y=min(s[i+1], (t-b*(s[i]-1)-c*(x-s[i])+a*(x+1))/a);
        ans+=x-s[i];
        if (x<y)
            pq.push({y-x, {i, y}});
    }
    if (b*(n-1)<=t)
        ans++;
    for (long long i=m; i<k; i++)
    {
        if (pq.empty())
            break;
        ans+=pq.top().first;
        long long ind=pq.top().second.first;
        long long x=pq.top().second.second;
        long long y=min(s[ind+1], (t-b*(s[ind]-1)-c*(x-s[ind])+a*(x+1))/a);
        pq.pop();
        if (x<y)
            pq.push({y-x, {ind, y}});
    }
    cout << ans;
    return 0;
}

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