Submission #1840964


Source Code Expand

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cassert>
#include <cctype>
using namespace std;
typedef long long lint;
#define cout cerr
#define ni (next_num<int>())
template<class T>inline T next_num(){
	T i=0;char c;
	while(!isdigit(c=getchar())&&c!='-');
	bool flag=c=='-';
	flag?c=getchar():0;
	while(i=i*10-'0'+c,isdigit(c=getchar()));
	return flag?-i:i;
}
template<class T1,class T2>inline void apmax(T1 &a,const T2 &b){if(a<b)a=b;}
template<class T1,class T2>inline void apmin(T1 &a,const T2 &b){if(b<a)a=b;}
const int N=200010,SH=19,SN=1<<SH,INF=0x7f7f7f7f;
int tol[N][SH],tor[N][SH];
int fl[SN],fr[SN];
int x[N],v[N];
int ext[N];
int main(){
	int n=ni,vs=0;
	v[0]=ni;
	for(int &i=vs;v[i];i++){
		v[i+1]=v[i]>>1;
	}
	for(int i=1;i<=n;i++){
		x[i]=ni;
	}
	for(int j=0;j<=vs;j++){
		for(int i=1;i<=n;i++){
			tol[i][j]=i>1&&x[i]-x[i-1]<=v[j]?tol[i-1][j]:i;
		}
		for(int i=n;i>=1;i--){
			tor[i][j]=i<n&&x[i+1]-x[i]<=v[j]?tor[i+1][j]:i;
		}
	}
	for(int s=0,ts=1<<vs;s<ts;s++){
		fl[s]=0;
		for(int i=1;i<=vs;i++){
			if((s>>(i-1))&1){
				apmax(fl[s],tor[fl[s^(1<<(i-1))]+1][i]);
			}
		}
	}
	for(int s=0,ts=1<<vs;s<ts;s++){
		fr[s]=n+1;
		for(int i=1;i<=vs;i++){
			if((s>>(i-1))&1){
				apmin(fr[s],tol[fr[s^(1<<(i-1))]-1][i]);
			}
		}
	}
	memset(ext,127,sizeof(ext));
	for(int s=0,ts=1<<vs;s<ts;s++){
		apmin(ext[fl[s]],fr[s^(ts-1)]);
	}
	for(int i=n;i>=1;i--){
		apmin(ext[i-1],ext[i]);
	}
	for(int i=1;i<=n;i++){
		puts(ext[tol[i][0]-1]<=tor[i][0]+1?"Possible":"Impossible");
	}
	return 0;
}

Submission Info

Submission Time
Task E - Camel and Oases
User sshockwave
Language C++14 (GCC 5.4.1)
Score 1000
Code Size 1591 Byte
Status AC
Exec Time 126 ms
Memory 37760 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 1000 / 1000
Status
AC × 3
AC × 70
Set Name Test Cases
Sample 00_example_01.txt, 00_example_02.txt, 00_example_03.txt
All 00_example_01.txt, 00_example_02.txt, 00_example_03.txt, 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, 48.txt, 49.txt, 50.txt, 51.txt, 52.txt, 53.txt, 54.txt, 55.txt, 56.txt, 57.txt, 58.txt, 59.txt, 60.txt, 61.txt, 62.txt, 63.txt, 64.txt, 65.txt, 66.txt, 67.txt
Case Name Status Exec Time Memory
00_example_01.txt AC 3 ms 9216 KB
00_example_02.txt AC 3 ms 9216 KB
00_example_03.txt AC 3 ms 9216 KB
01.txt AC 39 ms 9216 KB
02.txt AC 12 ms 9216 KB
03.txt AC 38 ms 9216 KB
04.txt AC 12 ms 9216 KB
05.txt AC 39 ms 9216 KB
06.txt AC 47 ms 13696 KB
07.txt AC 16 ms 11520 KB
08.txt AC 43 ms 11520 KB
09.txt AC 17 ms 11520 KB
10.txt AC 41 ms 9344 KB
11.txt AC 25 ms 11648 KB
12.txt AC 41 ms 9344 KB
13.txt AC 125 ms 37760 KB
14.txt AC 39 ms 9216 KB
15.txt AC 12 ms 9216 KB
16.txt AC 38 ms 9216 KB
17.txt AC 11 ms 9216 KB
18.txt AC 40 ms 9216 KB
19.txt AC 20 ms 9216 KB
20.txt AC 46 ms 13696 KB
21.txt AC 16 ms 11520 KB
22.txt AC 44 ms 11648 KB
23.txt AC 18 ms 13696 KB
24.txt AC 45 ms 9344 KB
25.txt AC 26 ms 11520 KB
26.txt AC 46 ms 11648 KB
27.txt AC 124 ms 37760 KB
28.txt AC 47 ms 13696 KB
29.txt AC 16 ms 11520 KB
30.txt AC 47 ms 13696 KB
31.txt AC 25 ms 9472 KB
32.txt AC 43 ms 9344 KB
33.txt AC 26 ms 11520 KB
34.txt AC 46 ms 11520 KB
35.txt AC 126 ms 37760 KB
36.txt AC 39 ms 9216 KB
37.txt AC 12 ms 9216 KB
38.txt AC 41 ms 9216 KB
39.txt AC 12 ms 9216 KB
40.txt AC 41 ms 9216 KB
41.txt AC 21 ms 9216 KB
42.txt AC 42 ms 9216 KB
43.txt AC 21 ms 9216 KB
44.txt AC 41 ms 9216 KB
45.txt AC 22 ms 9216 KB
46.txt AC 15 ms 9472 KB
47.txt AC 46 ms 11520 KB
48.txt AC 25 ms 9472 KB
49.txt AC 47 ms 11520 KB
50.txt AC 25 ms 9472 KB
51.txt AC 45 ms 9472 KB
52.txt AC 25 ms 9472 KB
53.txt AC 45 ms 9472 KB
54.txt AC 25 ms 9472 KB
55.txt AC 46 ms 11520 KB
56.txt AC 14 ms 9344 KB
57.txt AC 45 ms 11520 KB
58.txt AC 24 ms 11520 KB
59.txt AC 42 ms 9344 KB
60.txt AC 26 ms 11520 KB
61.txt AC 45 ms 11520 KB
62.txt AC 25 ms 9472 KB
63.txt AC 45 ms 11520 KB
64.txt AC 26 ms 11520 KB
65.txt AC 44 ms 11520 KB
66.txt AC 3 ms 9216 KB
67.txt AC 3 ms 9216 KB