| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1213207 | minhpk | Room Temperature (JOI24_ho_t1) | C++20 | 268 ms | 27832 KiB |
#include <bits/stdc++.h>
#define int long long
using namespace std;
int z[1000005];
int big,smol;
int max1=-1e18;
int min1=1e18;
set<int> s;
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int a,b;
cin >> a >> b;
for (int i=1;i<=a;i++){
cin >> z[i];
}
for (int i=1;i<=a;i++){
z[i]= z[i]%b +b*(z[i]%b==0);
}
sort(z+1,z+1+a);
for (int i=1;i<=a;i++){
s.insert(z[i]);
}
int res=0;
auto it1=s.begin();
int pre=*it1%b;
auto it2=s.rbegin();
res= (*it2-*it1+1)/2;
s.insert(*it1+b);
s.erase(it1);
while (*s.begin()%b!=pre){
it1=s.begin();
int pre=*it1%b;
auto it2=s.rbegin();
res= min(res,(*it2-*it1+1)/2);
s.insert(*it1+b);
s.erase(it1);
}
cout << res << "\n";
return 0;
}
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