Submission #1005881

#	Time	Username	Problem	Language	Result	Execution time	Memory
1005881		hacizadal	Rice Hub (IOI11_ricehub)	C++17	100 / 100	10 ms	3676 KiB

ricehub

#include "ricehub.h"
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define ll long long
#define pll pair<ll, ll>
ll p[100005];

int besthub(int n, int k, int a[], long long b)
{
    for (ll i = 0; i<n; i++){
        p[i+1] = p[i] + a[i];
    }
    ll l = 0, r = 0, mx = 0;
    while (r < n){
        ll mid = (l + r)/2;
        ll sum = (p[r+1] - p[mid+1] - a[mid]*(r-mid)) + (a[mid]*(mid-l) - (p[mid] - p[l]));
        if (sum <= b){
            mx = max(mx, r-l+1);
            r++;
        }
        else {
            l++;
        }
    }
    return mx;
}

// l = 2, mid = 3, r = 4
//     3        4      5

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