Submission #1089775

#	Time	Username	Problem	Language	Result	Execution time	Memory
1089775		an22inkle	Room Temperature (JOI24_ho_t1)	C++17	100 / 100	74 ms	7260 KiB

Main

#include<bits/stdc++.h>
using pair = std::array<int, 2>;
using ll = long long;

int main() {
  std::ios::sync_with_stdio(false);
  std::cin.tie(nullptr);

  int n, m;
  std::cin >> n >> m;
  std::vector<int> v(n);
  for (int i = 0; i < n; i++) {
    std::cin >> v[i];
    v[i] %= m;
  }

  std::sort(v.begin(), v.end());

  int min = v[n-1] - (v[n-1]+v[0])/2;
  for (int i = 0; i < n; i++) {
    int a = v[i], b = v[(i + 1) % n];
    if (a == b) continue;

    b -= m;
    int mid = (a + b)/2;
    min = std::min(min, std::max({
                          std::abs(mid - v[0]),
                          std::abs(mid - b),
                          std::abs(mid - a)
                       }));
  } 



  std::cout << min << '\n';
}

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