Submission #1007977

#	Time	Username	Problem	Language	Result	Execution time	Memory
1007977		North1304	Rice Hub (IOI11_ricehub)	C++14	100 / 100	8 ms	3676 KiB

ricehub

#include "ricehub.h"
#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 1;
long long qs[N];
bool solve(int mid,int n,long long t) {
    long long l,r;
    for (int i=(mid+1)/2;i+mid/2<=n;i++) {
        if (mid%2) l = qs[i-1] - qs[max(0, i-mid/2-1)];
        else l = qs[i] - qs[max(0, i-mid/2)];
        r = qs[i+mid/2] - qs[i];
        if (r - l <= t) return true;
    }
    return false;
}
int besthub(int n,int m,int x[],long long t) {
    for (int i=0;i<n;i++) qs[i+1] = qs[i] + x[i];
    int l = 1 , r = n , ans = 0;
    while (l <= r) {
        int mid = (l + r) / 2;
        if (solve(mid, n, t)) l = mid + 1 , ans = mid;
        else r = mid - 1;
    }
    return ans;
}

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