Submission #1216261

#	Time	Username	Problem	Language	Result	Execution time	Memory
1216261		badge881	Room Temperature (JOI24_ho_t1)	C++20	100 / 100	72 ms	2372 KiB

Main

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

int main()
{
    int n, t;
    scanf("%d %d", &n, &t);
    vector<int> a(n);
    for (int i = 0; i < n; i++)
        scanf("%d", &a[i]);
    for (int i = 0; i < n; i++)
        a[i] %= t;
    sort(a.begin(), a.end());
    if (a.front() == a.back())
    {
        printf("0\n");
        return 0;
    }
    long long ans = t;
    for (int i = 0; i < n; i++)
    {
        long long mini = a[i], maxi = a[(i + n - 1) % n];
        if (maxi <= mini)
            maxi += t;
        long long mid = (mini + maxi) / 2;
        ans = min(ans, max(maxi - mid, mid - mini));
    }
    printf("%lld\n", ans);
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     scanf("%d %d", &n, &t);
      |     ~~~~~^~~~~~~~~~~~~~~~~
Main.cpp:10:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |         scanf("%d", &a[i]);
      |         ~~~~~^~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 5 / 5
• Subtask 3: 30 / 30
• Subtask 4: 35 / 35
• Subtask 5: 15 / 15