Submission #743999

#	Time	Username	Problem	Language	Result	Execution time	Memory
743999		vjudge1	Rice Hub (IOI11_ricehub)	C++17	0 / 100	3 ms	636 KiB

ricehub

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

bool check(int window, long long qs[], int R, long long B)
{
    for (int m = (window + 1) / 2; m + (window / 2) <= R; ++m)
    {
        long long rightdis = qs[m + (window / 2)] - qs[m];
        long long leftdis = qs[m - 1 + (window % 2 == 0)] - qs[m - (window / 2) + (window % 2 == 0) - 1];
        long long cost = rightdis - leftdis;
        if (cost <= B)
            return true;
    }
    return false;
}

int besthub(int R, int L, int X[], long long B)
{
    long long dp[R + 1];
    int ans = -1;
    dp[0] = 0;
    for (int i = 1; i <= R; ++i)
        dp[i] = dp[i - 1] + X[i - 1];
    int l = 0, r = R + 10;
    while (l < r)
    {
        int mid = (l + r) / 2;
        //cout << l << " " << mid << " " << r << "\n";
        if (check(mid, dp, R, B))
        {
            l = mid + 1;
            ans = max(mid, ans);
        }
        else
            r = mid - 1;
    }
    cout << ans;
    return l;
}

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