Submission #823930

#	Time	Username	Problem	Language	Result	Execution time	Memory
823930		AmirElarbi	Semiexpress (JOI17_semiexpress)	C++14	0 / 100	1 ms	212 KiB

semiexpress

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#define INF 1e9
#define ve vector
#define vi ve<int>
#define ii pair<int,int>
#define vii ve<ii>
#define pb push_back
#define fi first
#define se second
#define ll long long
using namespace __gnu_pbds;
using namespace std;
const int nax = 2e5+5;
const int kax = 25+5;
const int MOD = 1e9+7;
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
int main() {
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    ll n,m,k;
    cin >> n >> m >> k;
    ll a,b,c,t;
    cin >> a >> b >> c >> t;
    priority_queue< pair<ll,pair<ll,int>> > pq;
    ll ans = 0;
    ve<ll> s(m+1);
    s[m] = n+1;
    for (int i = 0; i < m; ++i)
    {
        cin >> s[i];
    }
    for (int i = 0; i < m; ++i)
    {
        ll trav = (s[i]-1)*1ll*b;
        if(t < trav) break;
        ll mx = min(s[i+1], s[i]+(t-trav)/a+1);
        ans +=  mx-s[i];
        ll tse = trav + (mx-s[i]) * 1ll * c;
        if(t < tse) continue;
        ll mxse = min(s[i+1], mx+(t-tse)/a+1);
        if(mxse > mx) pq.push({mxse-mx, {mxse,i}});
    }
    for (int aa = 0; aa < k-m; ++aa)
    {
        if(pq.empty()) break;
        pair<ll,pair<ll,int>> cur = pq.top();
        pq.pop();
        ll i = cur.se.se;
        ans += cur.fi;
        ll trav = (s[i]-1)*1ll*b + (cur.se.fi-s[i])*1ll*c;
        if(t < trav) continue;
        ll mx = min(s[i+1], cur.se.fi+(t-trav)/a+1);
        if(mx > cur.se.fi && mx != s[i+1]) pq.push({mx-cur.se.fi, {mx,i}});
    }
    cout << ans-1 << endl;
}

• Subtask 1: 0 / 18
• Subtask 2: 0 / 30
• Subtask 3: 0 / 52