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Submission #126176

# Submission time Handle Problem Language Result Execution time Memory
126176 2019-07-07T08:03:57 Z StevenH Wall (IOI14_wall) C++14
0 / 100
 175 ms 14096 KB 
#include "wall.h"

const int maxn = 100005;
struct Wall{
	int max,min,val;
}wall[maxn*4];
int fh[maxn];
int max(int &x,int &y)
{
	if(x>y)return x;
	else return y;
}
int min(int &x,int &y)
{
	if(x<y)return x;
	else return y;
}
void push_up(int p)
{
	if(p>1)
	{
		wall[p/2].max=max(wall[p].max,wall[p+1].max);
		wall[p/2].min=min(wall[p].min,wall[p+1].min);
		//cout<<p<<" "<<wall[p].max<<" "<<wall[p].min<<endl;
		push_up(p/2);
		return ;
	}
	return ;
}
void push_down(int p,int x,int y)
{
	if(x<y)
	{ 
		wall[p*2]=wall[p];
		wall[p*2+1]=wall[p];
		int mid=(x+y)/2;
		push_down(p*2,x,mid);
		push_down(p*2+1,mid+1,y);
		return ;
	}
	return ;
}
void add(int p,int x,int y,int tx,int ty,int h) 
{
	int mid=(x+y)/2;
	//return ;
	//cout<<p<<endl;
	if(y<tx || ty<x)return ;
	if(tx<=x && y<=ty)	// xy在txty中 
	{
		if(h>=wall[p].max)	// 高度大於區間最高值 全部改 
		{
			wall[p].max=h; 
			wall[p].min=h;
			if(p>1)push_up(p);
			if(x<y)push_down(p,x,y);
		}
		else if(h<wall[p].min)return ;//高度小於區間最小 
		else  
		{
			add(p*2,x,mid,tx,ty,h);
			add(p*2+1,mid+1,y,tx,ty,h);
		}
		return ;
	}
	else
	{
		add(p*2,x,mid,tx,ty,h);
		add(p*2+1,mid+1,y,tx,ty,h);
		return ;
	}
}
void rmv(int p,int x,int y,int tx,int ty,int h)
{
	int mid=(x+y)/2;
	//cout<<x<<" "<<y<<endl; 
	if(y<tx || ty<x)return ;
	if(tx<=x && y<=ty)	// xy在txty中 
	{
	
		if(h<=wall[p].min)	// 高度小於區間最低值 全部改 
		{
			//cout<<x<<"-"<<y<<endl; 
			wall[p].max=h; 
			wall[p].min=h;
			//cout<<p<<endl;
			if(p>1)push_up(p);
			if(x!=y)push_down(p,x,y);
		}
		else if(h>wall[p].max)return ;//高度大於區間最大 捨去 
		else  
		{
			rmv(p*2,x,mid,tx,ty,h);
			rmv(p*2+1,mid+1,y,tx,ty,h);
		}
		return ;
	}
	else
	{
		rmv(p*2,x,mid,tx,ty,h);
		rmv(p*2+1,mid+1,y,tx,ty,h);
		return ;
	}
}
void find(int p,int x,int y)
{
	if(wall[p].max==wall[p].min)
	{
		//cout<<x<<" "<<y<<endl;
		for(int i=x;i<=y;i++)fh[i]=wall[p].min;
		return ;
	}
	int mid=(x+y)/2;
	find(p*2,x,mid);
	find(p*2+1,mid+1,y);
	return ;
}
void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
  	
	for(int i=0;i<k;i++)
	{
		if(op[i]==1)
		{
			//cout<<"*";
			add(1,0,n-1,left[i],right[i],height[i]);	
		}
		if(op[i]==2)
		{
			rmv(1,0,n-1,left[i],right[i],height[i]);	
		}
		//find(1,0,n-1);
		//for (int j=0;j<n;j++)printf("%d ", fh[j]);
		//cout<<endl;
	}
  	find(1,0,n-1);
  	for(int i=0;i<n;i++)finalHeight[i]=fh[i];
  	return;
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 4 ms 504 KB Output is correct
3 Incorrect 4 ms 376 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 175 ms 14096 KB Output is correct
3 Incorrect 167 ms 8316 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB Output is correct
2 Correct 4 ms 376 KB Output is correct
3 Incorrect 4 ms 376 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 420 KB Output is correct
2 Correct 4 ms 504 KB Output is correct
3 Incorrect 4 ms 376 KB Output isn't correct
4 Halted 0 ms 0 KB -