제출 #1035383

#제출 시각아이디문제언어결과실행 시간메모리
1035383borisAngelovRoom Temperature (JOI24_ho_t1)C++17
100 / 100
74 ms7232 KiB
#include <bits/stdc++.h>

using namespace std;

const int maxn = 500005;

int n, t;
int a[maxn];

void read()
{
    cin >> n >> t;

    for (int i = 1; i <= n; ++i)
    {
        cin >> a[i];
    }
}

void solve()
{
    for (int i = 1; i <= n; ++i) a[i] = a[i] % t;
    sort(a + 1, a + n + 1);

    int ans = max(a[n] - (a[1] + a[n]) / 2, (a[1] + a[n]) / 2 - a[1]);

    for (int i = 1; i <= n - 1; ++i)
    {
        int mx = a[i];
        int mn = a[i + 1] - t;
        ans = min(ans, max(mx - (mx + mn) / 2, (mx + mn) / 2 - mn));
    }

    cout << ans << "\n";
}

void fastIO()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}

int main()
{
    fastIO();

    read();
    solve();

    return 0;
}
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