hdu4614Vases and Flowers(线段树，段设置，更新时范围的右边值为变量)

2018年02月22日 ⁄ 综合 ⁄ 共 3081字 ⁄ 字号 评论关闭
Problem Description
Alice is so popular that she can receive many flowers everyday. She has N vases numbered from 0 to N-1. When she receive some flowers, she will try to put them in the vases, one flower in one vase. She randomly choose the vase A
and try to put a flower in the vase. If the there is no flower in the vase, she will put a flower in it, otherwise she skip this vase. And then she will try put in the vase A+1, A+2, ..., N-1, until there is no flower left or she has tried the vase N-1. The
left flowers will be discarded. Of course, sometimes she will clean the vases. Because there are too many vases, she randomly choose to clean the vases numbered from A to B(A <= B). The flowers in the cleaned vases will be discarded.

Input
The first line contains an integer T, indicating the number of test cases.
For each test case, the first line contains two integers N(1 < N < 50001) and M(1 < M < 50001). N is the number of vases, and M is the operations of Alice. Each of the next M lines contains three integers. The first integer of one line is K(1 or 2). If K
is 1, then two integers A and F follow. It means Alice receive F flowers and try to put a flower in the vase A first. If K is 2, then two integers A and B follow. It means the owner would like to clean the vases numbered from A to B(A <= B).

Output
For each operation of which K is 1, output the position of the vase in which Alice put the first flower and last one, separated by a blank. If she can not put any one, then output 'Can not put any one.'. For each operation of which
K is 2, output the number of discarded flowers.
Output one blank line after each test case.

Sample Input
2 10 5 1 3 5 2 4 5 1 1 8 2 3 6 1 8 8 10 6 1 2 5 2 3 4 1 0 8 2 2 5 1 4 4 1 2 3

Sample Output
3 7 2 1 9 4 Can not put any one. 2 6 2 0 9 4 4 5 2 3

#include<stdio.h>
#define N 50010
struct node
{
int sum,b;//sum为在范围内的花数，b为判断是否全为空或全为满则为1，否则为0
}tree[4*N];
void biulde(int l,int r,int k)
{
int m=(l+r)/2;
tree[k].sum=0; tree[k].b=1;
if(l==r) return ;
biulde(l,m,k*2);  biulde(m+1,r,k*2+1);
}
void set_child(int l,int r,int k)
{
int m=(l+r)/2;
tree[k*2].b=tree[k*2+1].b=1;
if(tree[k].sum==r-l+1){
tree[k*2].sum=m-l+1; tree[k*2+1].sum=r-m;
}
else{
tree[k*2].sum=0; tree[k*2+1].sum=0;
}
}
int QL,QR,L,R,ans,n;
void putInFlower(int l,int r,int k)
{
if(ans<=0) return ;
int m=(l+r)/2;
if(L<=l&&r<=R&&tree[k].b)
{
if(!tree[k].sum) {
int tans=ans;
ans-=(r-l+1); tree[k].sum=r-l+1;
if(QL<0) QL=l-1;
QR=r-1;
}
else{//跳动插花范围的右边值，R刚好是插完花的右边范围的最小值，除非超出花瓶数量，则为n
R+=(r-l+1); if(R>n) R=n;
}
return ;
}
if(tree[k].b)
set_child(l,r,k);
tree[k].b=0;
if(L<=m) putInFlower(l,m,k*2);
if(R>m) putInFlower(m+1,r,k*2+1);

tree[k].sum=tree[k*2].sum+tree[k*2+1].sum;
if(tree[k].sum==r-l+1||!tree[k].sum)
tree[k].b=1;
}
void clear(int l,int r,int k)
{
int m=(l+r)/2;
if(L<=l&&r<=R)
{
ans+=tree[k].sum; tree[k].b=1; tree[k].sum=0;
return ;
}
if(tree[k].b)
set_child(l,r,k);
tree[k].b=0;
if(L<=m) clear(l,m,k*2);
if(R>m) clear(m+1,r,k*2+1);

tree[k].sum=tree[k*2].sum+tree[k*2+1].sum;
if(tree[k].sum==r-l+1||!tree[k].sum)
tree[k].b=1;
}
int main()
{
int t,m,x;
scanf("%d",&t);
while(t--)
{
scanf("%d%d",&n,&m);
biulde(1,n,1);
while(m--)
{
scanf("%d%d",&x,&L); L++;
if(x==1){
scanf("%d",&ans);
R=L+ans-1; QL=QR=-1;
putInFlower(1,n,1);
if(QR>=0)
printf("%d %d\n",QL,QR);
else
printf("Can not put any one.\n");
}
else{
scanf("%d",&R); R++; ans=0;
clear(1,n,1);
printf("%d\n",ans);
}
}
printf("\n");
}
return 0;
}