Submission #1265690

#	Time	Username	Problem	Language	Result	Execution time	Memory
1265690		kl0989e	Rice Hub (IOI11_ricehub)	C++20	100 / 100	10 ms	2376 KiB

ricehub

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

#define ll long long
#define fi first
#define se second
#define pb push_back
#define vi vector<int>
#define vl vector<ll>
#define pi pair<int, int>
#define pl pair<ll,ll>
#define all(x) (x).begin(),(x).end()

vl sx,x;
ll b;

bool check(int tl, int tr) {
    int mid=tl+(tr-tl)/2;
    ll price=(mid-tl+1)*x[mid]-(sx[mid+1]-sx[tl])+(sx[tr+1]-sx[mid+1])-(tr-mid)*x[mid];
    return (price<=b);
}

int besthub(int n, int l, int _x[], ll _b) {
    b=_b;
    sx.resize(n+1,0);
    x.resize(n);
    for (int i=0; i<n; i++) {
        x[i]=_x[i];
        sx[i+1]=sx[i]+x[i];
    }
    int ans=1;
    int tl=0,tr=0;
    while (tr<n-1) {
        tr++;
        while (!check(tl,tr)) {
            tl++;
        }
        ans=max(ans,tr-tl+1);
    }
    return ans;
}

• Subtask 1: 17 / 17
• Subtask 2: 25 / 25
• Subtask 3: 26 / 26
• Subtask 4: 32 / 32