Submission #678032

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
678032	2023-01-05 04:31:10	AngusRitossa	Mountains (IOI17_mountains)	C++14	100 / 100	126 ms	17828 KiB

mountains

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#include "mountains.h"
#include <bits/stdc++.h>
using namespace std;
typedef long double ld;
int memo[2010][2010];
bool done[2010][2010];
vector<int> height;
int dp(int s, int e)
{
  if (s > e) return 0;
  if (done[s][e]) return memo[s][e];
  done[s][e] = true;
  int ans = 1;
  ld maxhei = -99999999999.9;
  int pre = s;
  for (int i = s+1; i <= e; i++)
  {
    ld newhei = (height[i]-height[s])/(ld)(i-s);
    if (newhei >= maxhei)
    {
      ans+=dp(pre+1, i-1);
      pre = i;
      maxhei = newhei;
    }
  }
  ans+=dp(pre+1, e);
  ans = max(ans, dp(s+1, e));
  return memo[s][e] = ans;
}
int maximum_deevs(vector<int> y) {
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 30 / 30
• Subtask 4: 30 / 30