Submission #794347

#	Time	Username	Problem	Language	Result	Execution time	Memory
794347		kirakaminski968	Semiexpress (JOI17_semiexpress)	C++17	0 / 100	1 ms	212 KiB

semiexpress

#include <bits/stdc++.h>
#define ll long long
using namespace std;
int express[3005],endpos[3005];
int main()
{
  	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); 
    int N,M,K; cin >> N >> M >> K;
    int A,B,C; cin >> A >> B >> C;
    int T; cin >> T;
    for(int i = 1;i<=M;++i){
        cin >> express[i];
        express[i]--;
        endpos[i] = (T-express[i]*B)/A;
        if(endpos[i] < 0) endpos[i] = -1;
    }
    for(int i = 1;i<M;++i) endpos[i] = min(endpos[i],express[i+1]-express[i]-1);
    endpos[M] = min(endpos[M],0);
    for(int i = 0;i<K-M;++i){
        int maxn = 0, pos = -1;
        for(int j = 1;j<M;++j){
            if((T-express[j]*B-(endpos[j]+1)*C)/A < 0) continue;
            int p = endpos[j]+1;
            int chec = min(express[j+1]-express[j]-1,(T-express[j]*B-p*C)/A+p);
            if(chec-p+1 > maxn){
                maxn = chec-p+1;
                pos = j;
            }
        }
        if(maxn > 0){
            endpos[pos] += maxn;
        }
    }
    ll ans = 0;
    for(int i = 1;i<=M;++i) ans += endpos[i]+1;
    ans--;
    cout << ans << "\n";
    return 0;
}

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