Submission #556475

#	Time	Username	Problem	Language	Result	Execution time	Memory
556475		Dan4Life	Rice Hub (IOI11_ricehub)	C++17	100 / 100	19 ms	2516 KiB

ricehub

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

ll pref[100010];

ll sum(int i, int j){ return pref[j+1]-pref[i]; }

int besthub(int n, int m, int a[], ll b)
{
    pref[0] = 0; int ans = 0;
    for(int i = 0; i < n; i++)
        pref[i+1] = pref[i]+a[i];
    for(int i = 0; i < n; i++){
        int l = i, r = n-1;
        while(l<r){
            int mid = (l+r+1)/2;
            int x = (i+mid)/2+1, xx = (i+mid-1)/2;
            if(sum(x,mid)-sum(i,xx)<=b) l=mid;
            else r = mid-1;
        }
        ans = max(ans, l-i+1);
    }
    return ans;
}

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