Submission #434078

#	Time	Username	Problem	Language	Result	Execution time	Memory
434078		illyakr	Rice Hub (IOI11_ricehub)	C++14	17 / 100	1083 ms	588 KiB

ricehub

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

ll have;
ll n;
ll a[101010];
ll tr(ll x) {
    ll now = have;
    int cl = 1;
    ll sum = 0;
    for (int i = 1; i <= n; i++) {
        if (abs(a[i] - x) < abs(a[cl] - x))
            cl = i;
        sum += abs(a[i] - x);
    }
    ll ans = 0;
    ll cnt = now / sum;
    ans = cnt * n;
    now -= (cnt * sum);

    if (abs(a[cl] - x) <= now) {
        now -= abs(a[cl] - x);
        ans++;
        int l = cl - 1, r = cl + 1;
        while (true) {
            if (l < 1 && r > n)break;
            if (l < 1 && abs(a[r] - x) <= now) {
                now -= abs(a[r] - x);
                r++;ans++;continue;
            }
            if (r > n && abs(a[l] - x) <= now) {
                now -= abs(a[l] - x);
                l--;ans++;continue;
            }


            if (l >= 1 && abs(a[l] - x) < abs(a[r] - x) && abs(a[l] - x) <= now) {
                now -= abs(a[l] - x);
                l--;ans++;continue;
            }
            if (r <= n && abs(a[l] - x) >= abs(a[r] - x) && abs(a[r] - x) <= now) {
                now -= abs(a[r] - x);
                r++;ans++;continue;
            }

            break;
        }
    }
//    cout << x << " ---   " << ans << " " << cnt << endl;
    return ans;
}

ll ans = 0;
int besthub(int R, int L, int X[], long long B) {
    n = R;
    for (int i = 0; i < R; i++)
        a[i + 1] = X[i];
    have = B;

    for (int i = 1; i <= L; i++) {
        ans = max(ans, tr(i));
    }
    return ans;
}

/**
5 20 6
1
2
10
12
14
3
*/

• Subtask 1: 17 / 17
• Subtask 2: 0 / 25
• Subtask 3: 0 / 26
• Subtask 4: 0 / 32