Submission #256836

#	Time	Username	Problem	Language	Result	Execution time	Memory
256836		AM1648	Gap (APIO16_gap)	C++17	100 / 100	61 ms	1916 KiB

gap

/* be name khoda */
#include <bits/stdc++.h>
#include "gap.h"
using namespace std;

typedef long long ll;
typedef pair<ll, ll> pii;

#define forifrom(i, s, n) for (ll i = s; i < n; ++i)
#define fori(i, n) forifrom(i, 0, n)

#define F first
#define S second

// ------------------------------------------------------------------

const ll maxn = 100010;
const ll maxa = 1000000000000000000;

ll A[maxn];

long long findGap(int T, int N) {
    if (T == 1) {
        A[0] = -1;
        A[N + 1] = maxa + 1;
        for (ll i = 0, j = N + 1; j - i > 1; ++i, --j) {
            MinMax(A[i] + 1, A[j] - 1, A + i + 1, A + j - 1);
        }
        ll ans = 0;
        forifrom (i, 1, N) ans = max(ans, A[i + 1] - A[i]);
        return ans;
    } else {
        ll lt, rt;
        MinMax(0, maxa, &lt, &rt);
        ll d = (rt - lt + N - 2) / (N - 1);
        ll i = lt, j = lt;
        while (j + 1 <= rt - 1) {
            ll a, b; MinMax(j + 1, min(j + d, rt - 1), &a, &b);
            if (a != -1) {
                d = max(d, a - i);
                i = j = b;
            } else {
                j += d;
            }
        }
        d = max(d, rt - i);
        return d;
    }
}

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