Submission #442118

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
442118	2021-07-07 07:31:22	prvocislo	Ancient Books (IOI17_books)	C++17	50 / 100	198 ms	26940 KiB

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#include "books.h"
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
const int maxn = 1e6 + 5;
vector<int> c(maxn, -1), L(maxn, maxn), R(maxn, -1);
void extend_for_free(int &l, int &r)
{
  int tl = min({l, L[c[l]], R[c[r]]}), tr = max({r, R[c[l]], R[c[r]]});
  while (tl < l || r < tr)
  {
    if (tl < l)
    {
      l--;
      tl = min(tl, L[c[l]]);
      tr = max(tr, R[c[l]]);
    }
    if (r < tr)
    {
      r++;
      tl = min(tl, L[c[r]]);
      tr = max(tr, R[c[r]]);
    }
  }
}
int calculate(int l, int r, int tl, int tr)
{
  int ans = 0;
  while (tl < l || r < tr)
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 10 / 10
• Subtask 3: 28 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 30