ZOJ 3635 Cinema in Akiba【线段树】

Cinema in Akiba

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Time Limit: 3 Seconds      Memory Limit: 65536 KB

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Cinema in Akiba (CIA) is a small but very popular cinema in Akihabara. Every night the cinema is full of people. The layout ofCIA is very interesting, as there is only one row so that every audience can enjoy the wonderful movies without any annoyance by other audiences sitting in front of him/her.

The ticket for CIA is strange, too. There are n seats in CIA and they are numbered from 1 to n in order. Apparently, n tickets will be sold everyday. When buying a ticket, if there are k tickets left, your ticket number will be an integeri (1 ≤ i ≤ k), and you should choose the ith empty seat (not occupied by others) and sit down for the film.

On November, 11th, n geeks go to CIA to celebrate their anual festival. The ticket number of theith geek is a_i. Can you help them find out their seat numbers?

Input

The input contains multiple test cases. Process to end of file.
The first line of each case is an integer n (1 ≤ n ≤ 50000), the number of geeks as well as the number of seats inCIA. Then follows a line containing n integers a₁,a₂, ..., a_n (1 ≤a_i ≤ n - i + 1), as described above. The third line is an integer m (1 ≤ m ≤ 3000), the number of queries, and the next line is m integers,q₁, q₂, ...,q_m (1 ≤ q_i ≤n), each represents the geek's number and you should help him find his seat.

Output

For each test case, print m integers in a line, seperated by one space. Theith integer is the seat number of the q_ith geek.

Sample Input

31 1 131 2 352 3 3 2 152 3 4 5 1

Sample Output

1 2 34 5 3 1 2

恩，题目大意就是说，电影院只有一排座位，每个到的人做的是第 ai 个空位置，然后问第 qi 个人所做的位置

#include <iostream>#include<cstdio>#include<cstring>#define maxn 50000+10using namespace std;struct lnode{    int l,r,c;};lnode node[maxn<<2];int ans[maxn];void pushup(int o){    node[o].c=node[o<<1].c+node[o<<1|1].c;}void build(int o,int l,int r){    node[o].l=l;    node[o].r=r;    node[o].c=r-l+1;    if(l==r)        return ;    int mid=(l+r)>>1;    build(o<<1,l,mid);    build(o<<1|1,mid+1,r);}int update(int o,int a){    if(node[o].l==node[o].r)    {        node[o].c=0;        return node[o].l;    }    int ans=0;    if(a<=node[o<<1].c)        ans=update(o<<1,a);    else        ans=update(o<<1|1,a-node[o<<1].c);    pushup(o);    return ans;}int main(){    int n,m,a;    while(~scanf("%d",&n))    {        memset(ans,0,sizeof(ans));        build(1,1,n);        for(int i=1;i<=n;++i)        {            scanf("%d",&a);            ans[i]=update(1,a);        }        scanf("%d",&m);        for(int i=1;i<=m;++i)        {            scanf("%d",&a);            if(i!=m)                printf("%d ",ans[a]);            else                printf("%d\n",ans[a]);        }    }    return 0;}