Submission #399176

#	Time	Username	Problem	Language	Result	Execution time	Memory
399176		dxz05	Gap (APIO16_gap)	C++14	38.81 / 100	823 ms	2048 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>

using namespace std;

const int MAXN = 555555;

typedef long long ll;
ll a[MAXN];

long long findGap(int SUBTASK, int n){
    if (SUBTASK == 1){
        ll mn = 0, mx = 1e18;
        for (int i = 1; i <= (n + 1) / 2; i++){
            MinMax(mn, mx, &a[i], &a[n - i + 1]);
            mn = a[i] + 1;
            mx = a[n - i + 1] - 1;
        }
    } else {
        a[0] = -1;
        for (int i = 1; i <= n; i++){
            for (int j = 0; j <= 60; j++){
                ll x = a[i - 1] + (1ll << j);
                ll mn, mx;
                MinMax(a[i - 1] + 1, x, &mn, &mx);
                if (mn != -1){
                    a[i] = mn;
                    break;
                }
            }
        //    cout << a[i] << ' ';
        }
    }

    ll ans = 0;
    for (int i = 1; i < n; i++){
        ans = max(ans, a[i + 1] - a[i]);
    }

    return ans;
}

• Subtask 1: 30 / 30
• Subtask 2: 8.8102496759 / 70