Submission #1281347

#	Time	Username	Problem	Language	Result	Execution time	Memory
1281347		altern23	Room Temperature (JOI24_ho_t1)	C++20	100 / 100	69 ms	4484 KiB

Main

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

#define ll long long
#define pii pair<ll, ll>
#define fi first
#define sec second
#define ld long double

#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")

const int MAXN = 5e5;
const ll INF = 1e18;
const int MOD = 1e9 + 7;

ll A[MAXN + 5];

int main(){
      ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
      int tc = 1;	
      // cin >> tc;
      for(;tc--;){
            ll N, T; cin >> N >> T;
                  
            for(int i = 1; i <= N; i++){
                  cin >> A[i];
                  A[i] %= T;
            }

            sort(A + 1, A + 1 + N);

            ll MX = 0;
            for(int i = 2; i <= N; i++){
                  MX = max(MX, A[i] - A[i - 1] - 1);
            }
            MX = max(MX, T + A[1] - A[N] - 1);

            // cout << MX << "\n";
            cout << (T - MX) / 2 << "\n";
      }
}

/*

*/

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