| Time Limit:4000MS | Memory Limit:65536K | |
| Total Submissions:14512 | Accepted:7247 |
Description
Railway tickets were difficult to buy around the Lunar New Year in China,so we must get up early and join a long queue…
The Lunar New Year was approaching,but unluckily the Little Cat still had schedules going here and there. Now,he had to travel by train to Mianyang,Sichuan Province for the winter camp selection of the national team of Olympiad in Informatics.
It was one o’clock a.m. and dark outside. Chill wind from the northwest did not scare off the people in the queue. The cold night gave the Little Cat a shiver. Why not find a problem to think about? That was none the less better than freezing to death!
People kept jumping the queue. Since it was too dark around,such moves would not be discovered even by the people adjacent to the queue-jumpers. “If every person in the queue is assigned an integral value and all the information about those who have jumped the queue and where they stand after queue-jumping is given,can I find out the final order of people in the queue?” Thought the Little Cat.
Input
There will be several test cases in the input. Each test case consists ofN+ 1 lines whereN(1 ≤N≤ 200,000) is given in the first line of the test case. The nextNlines contain the pairs of valuesPosiandValiin the increasing order ofi(1 ≤i≤N). For eachi,the ranges and meanings ofPosiandValiare as follows:
- Posi∈ [0,i− 1] — Thei-th person came to the queue and stood right behind thePosi-th person in the queue. The booking office was considered the 0th person and the person at the front of the queue was considered the first person in the queue.
- Vali∈ [0,32767] — Thei-th person was assigned the valueVali.
There no blank lines between test cases. Proceed to the end of input.
Output
For each test cases,output a single line of space-separated integers which are the values of people in the order they stand in the queue.
Sample Input
4 0 77 1 51 1 33 2 69 4 0 20523 1 19243 1 3890 0 31492
Sample Output
77 33 69 51 31492 20523 3890 19243
#include <cstdio> #include <cstring> #include <cstdlib> #include <cmath> #include <iostream> #include <algorithm> using namespace std; const int MAXN=200100; int num[MAXN<<2]; int ans[MAXN]; typedef struct { int pos; int value; }Unit; Unit tmp[MAXN]; void PushUp(int ret) { num[ret]=num[ret<<1]+num[ret<<1|1]; } void BuildTree(int left,int right,int ret) { if(left==right) { num[ret]=1; return ; } int mid=(left+right)>>1; BuildTree(left,mid,ret<<1); BuildTree(mid+1,right,ret<<1|1); PushUp(ret); } void Update(int pos,int value,int left,int ret) { if(left==right) { num[ret]=0; ans[left]=value; return ; } int mid=(left+right)>>1; if(num[ret<<1]>pos) Update(pos,value,left,ret<<1); else Update(pos-num[ret<<1],mid+1,ret<<1|1); PushUp(ret); } int main() { freopen("2828.in","r",stdin); // freopen("2828.out","w",stdout); int N; while(scanf("%d",&N)!=EOF) { BuildTree(0,N-1,1); for(int i=0;i<N;i++) scanf("%d%d",&tmp[i].pos,&tmp[i].value); for(int i=N-1;i>=0;i--) Update(tmp[i].pos,tmp[i].value,1); for(int i=0;i<N;i++) printf("%d%c",ans[i],i==N-1?'\n':' '); } return 0; }
