Submission #516586

#	Time	Username	Problem	Language	Result	Execution time	Memory
516586		jk410	Semiexpress (JOI17_semiexpress)	C++17	100 / 100	10 ms	4552 KiB

semiexpress

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll N,M,K,A,B,C,T,Ans;
ll S[3001];
priority_queue<ll> Q;
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>N>>M>>K>>A>>B>>C>>T;
    for (int i=1; i<=M; i++)
        cin>>S[i];
    for (int i=1; i<M; i++){
        ll t=B*(S[i]-1);
        if (t>T)
            continue;
        ll x=(T-t)/A+S[i];
        Ans+=min(x,S[i+1]-1)-S[i]+1;
        if (x>=S[i+1])
            continue;
        for (int j=0; j<K-M&&x<S[i+1]; j++){
            if (T<t+(x+1-S[i])*C)
                break;
            ll y=(T-t-(x+1-S[i])*C)/A+x+1;
            Q.push(min(y,S[i+1]-1)-x);
            x=y;
        }
    }
    if (B*(N-1)>T)
        Ans--;
    for (int i=0; i<K-M&&!Q.empty(); i++){
        Ans+=Q.top();
        Q.pop();
    }
    cout<<Ans;
    return 0;
}

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