Submission #1015242

# Submission time Handle Problem Language Result Execution time Memory
1015242 2024-07-06T07:54:11 Z vjudge1 Gap (APIO16_gap) C++17
53.169 / 100
43 ms 1988 KB
#include<bits/stdc++.h>
#include "gap.h"

using namespace std;

typedef long long ll;


ll subtask1(int N);

ll subtask2(ll s = 0, ll e = 1e18)
{
  if(s >= e) return 0;

  if(e - s == 1)
    {
      ll mn, mx;
      MinMax(s, e, &mn, &mx);
      return mx - mn;
    }

  ll diff = (e - s + 1) / 3;
  ll mid1 = s + diff, mid2 = mid1 + diff;
  ll mx1, mx2, mx3, mn1, mn2, mn3;

  MinMax(s, mid1, &mn1, &mx1);
  MinMax(mid1 + 1, mid2, &mn2, &mx2);
  MinMax(mid2 + 1, e, &mn3, &mx3);
  
  if(mn2 == -1 && mn3 == -1) return subtask2(mn1, mx1);
  if(mn1 == -1 && mn3 == -1) return subtask2(mn2, mx2);
  if(mn1 == -1 && mn2 == -1) return subtask2(mn3, mx3);

  if(mn1 == -1)
    {
      ll ans = mn3 - mx2;
      if(ans < mx3 - mn3)
	ans = max(ans, subtask2(mn3, mx3));

      if(ans < mx2 - mn2)
	ans = max(ans, subtask2(mn2, mx2));

      return ans;
    }

  if(mn2 == -1)
    {
      ll ans = mn3 - mx1;
      if(ans < mx3 - mn3)
	ans = max(ans, subtask2(mn3, mx3));

      if(ans < mx1 - mn1)
	ans = max(ans, subtask2(mn1, mx1));

      return ans;
    }

  if(mn3 == -1)
    {
      ll ans = mn2 - mx1;
      if(ans < mx1 - mn1)
	ans = max(ans, subtask2(mn1, mx1));

      if(ans < mx2 - mn2)
	ans = max(ans, subtask2(mn2, mx2));

      return ans;
    }
  
  ll ans = max(mn2 - mx1, mn3 - mx2);
  
  if(ans < mx1 - mn1)
    ans = max(ans, subtask2(mn1, mx1));
  
  if(ans < mx2 - mn2)
    ans = max(ans, subtask2(mn2, mx2));

  if(ans < mx3 - mn3)
    ans = max(ans, subtask2(mn3, mx3));
  
  return ans;
}

ll findGap(int T, int N)
{
  if(T == 1)
    return subtask1(N);
  return subtask2();
}
















ll subtask1(int N)
{
  int i = 0, j = N - 1;
  ll s = 0, e = 1e18;
  ll *mn = new ll, *mx = new ll;

  vector<ll> v(N);
  
  while(i <= j && s <= e)
    {
      MinMax(s, e, mn, mx);
      v[i] = *mn;
      v[j] = *mx;
      i++, j--;
      s = *mn + 1;
      e = *mx - 1;
    }

  ll ans = 0;
  for(int i = 1; i < v.size(); i++)
    ans = max(ans, v[i] - v[i - 1]);
  return ans;
}

Compilation message

gap.cpp: In function 'll subtask1(int)':
gap.cpp:125:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  125 |   for(int i = 1; i < v.size(); i++)
      |                  ~~^~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 6 ms 712 KB Output is correct
17 Correct 6 ms 612 KB Output is correct
18 Correct 6 ms 808 KB Output is correct
19 Correct 7 ms 856 KB Output is correct
20 Correct 5 ms 852 KB Output is correct
21 Correct 30 ms 1988 KB Output is correct
22 Correct 33 ms 1880 KB Output is correct
23 Correct 25 ms 1880 KB Output is correct
24 Correct 31 ms 1880 KB Output is correct
25 Correct 23 ms 1880 KB Output is correct
26 Correct 25 ms 1880 KB Output is correct
27 Correct 26 ms 1988 KB Output is correct
28 Correct 25 ms 1880 KB Output is correct
29 Correct 36 ms 1880 KB Output is correct
30 Correct 20 ms 1908 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Partially correct 0 ms 344 KB Partially correct
6 Partially correct 0 ms 344 KB Partially correct
7 Partially correct 0 ms 344 KB Partially correct
8 Partially correct 0 ms 344 KB Partially correct
9 Partially correct 0 ms 344 KB Partially correct
10 Correct 0 ms 344 KB Output is correct
11 Partially correct 1 ms 344 KB Partially correct
12 Partially correct 1 ms 344 KB Partially correct
13 Partially correct 1 ms 344 KB Partially correct
14 Partially correct 1 ms 344 KB Partially correct
15 Partially correct 1 ms 424 KB Partially correct
16 Partially correct 11 ms 632 KB Partially correct
17 Partially correct 8 ms 616 KB Partially correct
18 Partially correct 8 ms 600 KB Partially correct
19 Partially correct 8 ms 600 KB Partially correct
20 Correct 2 ms 600 KB Output is correct
21 Partially correct 34 ms 1112 KB Partially correct
22 Partially correct 34 ms 1112 KB Partially correct
23 Partially correct 43 ms 1104 KB Partially correct
24 Partially correct 34 ms 980 KB Partially correct
25 Partially correct 38 ms 1112 KB Partially correct
26 Partially correct 34 ms 1112 KB Partially correct
27 Partially correct 34 ms 1112 KB Partially correct
28 Partially correct 35 ms 1112 KB Partially correct
29 Partially correct 35 ms 1112 KB Partially correct
30 Correct 7 ms 1112 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 1 ms 344 KB Output is correct