Submission #560856

#	Time	Username	Problem	Language	Result	Execution time	Memory
560856		messiuuuuu	Gap (APIO16_gap)	C++14	87.64 / 100	61 ms	1864 KiB

gap

#include <bits/stdc++.h>
#include "gap.h"
#define task "B"
#define ll long long
#define ld long double
#define fi first
#define se second
#define pb push_back
using namespace std;
const int MAXN = 1e5 + 5;
const ll INF = 1e18 + 5;

ll ans = 0;

ll findGap(int t, int n)
{
    if (t == 1)
    {
        ll l = 0, r = 1e18, a[n + 1];
        for (int i = 1; i <= n && (n - i + 1) >= i; i++)
        {
            MinMax(l, r, &a[i], &a[n - i + 1]);
            l = a[i] + 1;
            r = a[n - i + 1] - 1;
        }
        ans = 0;
        for (int i = 2; i <= n; i++)
        {
            ans = max(ans, a[i] - a[i - 1]);
        }
        return ans;
    } else
    {
        ll l = 0, r = 1e18;
        MinMax(l, r, &l, &r);
        if (n == 2)
            return r - l;
        ll h = (r - l + n - 2) / (n - 1);
        h--;
        ll ans = 0;
        ll prem = l;
        for (ll i = l; i <= r; i += h)
        {
            ll mn, mx;
            MinMax(i, i + h, &mn, &mx);
            if (mn == -1)
                continue;
            ans = max(ans, mn - prem);
            prem = mx;
        }
        return ans;
    }
}

• Subtask 1: 30 / 30
• Subtask 2: 57.6394784127 / 70