Submission #1015150

#	Time	Username	Problem	Language	Result	Execution time	Memory
1015150		vjudge1	Gap (APIO16_gap)	C++17	30 / 100	35 ms	2136 KiB

gap

#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)
{
  ll mid = (s + e) / 2;
  ll mx1, mx2, mn1, mn2;

  MinMax(s, mid, &mn1, &mx1);
  MinMax(mid + 1, e, &mn2, &mx2);
  
  if(mn2 == -1) return subtask2(mid + 1, e);
  if(mn1 == -1) return subtask2(s, mid);
  return max(mn2 - mx1, max(subtask2(s, mid), subtask2(mid + 1, e)));
}

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 (stderr)

gap.cpp: In function 'll subtask1(int)':
gap.cpp:72:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |   for(int i = 1; i < v.size(); i++)
      |                  ~~^~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 0 / 70