Submission #293513

#	Time	Username	Problem	Language	Result	Execution time	Memory
293513		tinjyu	Mountains (IOI17_mountains)	C++14	20 / 100	1 ms	512 KiB

mountains

#include "mountains.h"
#include <vector>
#include <iostream>
using namespace std;
int tag[2005][2005],no,num[2005],tag2[2005],dp[2005];
int maximum_deevs(std::vector<int> y) {
	int n=y.size(),ans=1;
	for(int i=0;i<n;i++)
	{
		int tmp=0;
		double ma=99999999999999;
		for(int j=i-1;j>=0;j--)
		{
			if((double)(y[i]-y[j])/(double)(i-j)<=ma)
			{
				tmp++;
				tag[i][j]=1;
				ma=(double)(y[i]-y[j])/(double)(i-j);
			}
		}
		ma=-99999999999999;
		num[i]=tmp;
	}
	dp[0]=1;
	for(int i=1;i<n;i++)
	{
	    dp[i]=1;
		for(int j=0;j<i;j++)
		{
			if(tag[i][j]==1)continue;
			dp[i]=max(dp[i],dp[j]+1);
		}
		ans=max(dp[i],ans);
	}
	return ans;
}

• Subtask 1: 20 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 30