HDU 1556 Color the ball

          http://acm.hdu.edu.cn/showproblem.php?pid=1556  

            Color the ball

Time Limit: 9000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 6567    Accepted Submission(s): 3448

Problem Description
N个气球排成一排,从左到右依次编号为1,2,3....N.每次给定2个整数a b(a <= b),lele便为骑上他的“小飞鸽"牌电动车从气球a开始到气球b依次给每个气球涂一次颜色。但是N次以后lele已经忘记了第I个气球已经涂过几次颜色了,你能帮他算出每个气球被涂过几次颜色吗?
 
Input
每个测试实例第一行为一个整数N,(N <= 100000).接下来的N行,每行包括2个整数a b(1 <= a <= b <= N)。 当N = 0,输入结束。
 
Output
每个测试实例输出一行,包括N个整数,第I个数代表第I个气球总共被涂色的次数。
 
Sample Input
3
1 1
2 2
3 3
3
1 1
1 2
1 3
0
 
Sample Output
 
1 1 1
3 2 1
 
#include<stdio.h>
#include<string.h>
#define maxn 500004  
struct node  
{  
    int left,right;  
    int num;  
}; 
int Total[maxn];
node tree[3*maxn];  
int out=0;  
void build(int left,int right,int i)  
{  
    tree[i].left =left;  
    tree[i].right =right;  
    tree[i].num =0;  
    if(tree[i].left ==tree[i].right )  
        return ;  
    build(left,(left+right)/2,2*i);  
    build((left+right)/2+1,right,2*i+1);  
} 
void UPDATA(int r,int i,int j)  
{  
	int MID=(tree[r].left +tree[r].right )/2;  
    if(tree[r].left==i&&tree[r].right ==j)  
        tree[r].num++;  
   else
   {
    if(j <= MID)
            UPDATA(2*r,i,j);
        else if( i > MID)
            UPDATA(2*r+1,i,j);
        else
        {
            UPDATA(2*r,i,MID);
            UPDATA(2*r+1,MID+1,j);
        }
    }
}
void SUM(int r)
{
    int i;
    for(i =tree[r].left; i <= tree[r].right;i++)
        Total[i]+=tree[r].num;
    if(tree[r].left==tree[r].right)
        return;
    else
    {
        SUM(2*r);
        SUM(2*r+1);
    }
}

int main()
{
	int n,r,l,i;
	while(~scanf("%d",&n)&&n!=0)
	{
	    build(1,n,1);  
	  for(i=1;i<=n;i++)
		{
			scanf("%d%d",&r,&l);
               UPDATA(1,r,l);
		}
	  memset(Total,0,sizeof(Total));
	           SUM(1);
		for(i = 1; i <= n; i++)
        {
            if(i==1)
                printf("%d",Total[i]);
            else
                printf(" %d",Total[i]);
        }
		printf("\n");
	}
	return 0;
}

 

posted @ 2013-10-24 22:34  疯狂的癫子  阅读(152)  评论(0编辑  收藏  举报