제출 #1147363

#제출 시각아이디문제언어결과실행 시간메모리
1147363koukirocksRoom Temperature (JOI24_ho_t1)C++20
100 / 100
62 ms4168 KiB
#include <bits/stdc++.h>
#define speed ios_base::sync_with_stdio(0);cin.tie(0)
#define all(x) x.begin()+1, x.end()

using namespace std;
typedef long long ll;

int main() {
    speed;
    int n,T;
    cin>>n>>T;
    vector<ll> a(n+1);
    for (int i=1;i<=n;i++) {
        cin>>a[i];
        a[i]%=T;
    }
    sort(all(a));
    ll ans=a[n]-a[1];
    for (int i=2;i<=n;i++) {
        ans=min(ans,a[i-1]+T-a[i]);
    }
    cout<<(ans+1)/2<<"\n";
    return 0;
}
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