Submission #224590

#	Time	Username	Problem	Language	Result	Execution time	Memory
224590		my99n	Rice Hub (IOI11_ricehub)	C++14	0 / 100	9 ms	640 KiB

ricehub

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

long long s[100100];

int sum(int l, int r) {
    if (l == 0) return s[r];
    return s[r] - s[l - 1];
}

int besthub(int n, int L, int x[], long long b) {
    s[0] = x[0];
    for (int i = 1; i < n; i++) s[i] = 0;
    for (int i = 1; i < n; i++) s[i] = x[i] + s[i - 1];
    int l = 0, r = 0, ans = 1;

    for (int i = 0; i < n; i++) {
        int l = 0, r = n - 1;
        while (l < r) {
            int mid = (l + r) / 2;
            int med = (i + mid) / 2;
            int left = s[med] * (med - i + 1) - sum(i, med);
            int right = sum(med + 1, mid) - s[med] * (mid - med);
            if (left + right > b)
                r = mid;
            else
                l = mid + 1;
        }
        ans = max(ans, l - i + 1);
    }
    return ans;
}

Compilation message (stderr)

ricehub.cpp: In function 'int besthub(int, int, int*, long long int)':
ricehub.cpp:16:9: warning: unused variable 'l' [-Wunused-variable]
     int l = 0, r = 0, ans = 1;
         ^
ricehub.cpp:16:16: warning: unused variable 'r' [-Wunused-variable]
     int l = 0, r = 0, ans = 1;
                ^

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