Submission #2152741
Source Code Expand
import java.util.Arrays; import java.util.Scanner; class BIT{ int N; long[] data; long inf = (long)1e9+7; public BIT(int n){ N = n; data = new long[N+1]; Arrays.fill(data,0); } public void add(int pos,long dat){ for(int x = pos;x<=N; x += x&-x)data[x] = (data[x]+dat)%inf; } public long getSum(int pos){ if(pos==0)return 0; long res = 0; for(int x = pos; x>0;x-=x&-x)res=(res+data[x])%inf; return res; } } class Main{ static long A,B; static int N; static long[] S; static int findIndex(long s){ int left=0; int right=N+1; while(right-left>1){ int center = (left+right)/2; if(s-S[center] >=B)left=center; else right=center; } return left; } public static void main(String[] args){ Scanner scan = new Scanner(System.in); N = scan.nextInt(); A = scan.nextLong(); B = scan.nextLong(); S = new long[N+1]; S[0]=-B; for(int i=0;i<N;++i)S[i+1] = scan.nextLong(); if(A>B){ long a = A; A=B; B=a; } for(int i=1;i+2<N+1;++i)if(S[i+2]-S[i] < A){ System.out.println(0); return; } long mod = (long)1e9+7; //1-index BIT bit = new BIT(N+1); bit.add(1, 1); bit.add(2,1); int leftindex = 0; for(int i=2;i<=N;++i){ long delta = S[i]-S[i-1]; if(delta < A){ bit.add(i+1, (bit.getSum(findIndex(S[i])+1) - bit.getSum(leftindex)+mod)%mod); leftindex = i-1; } else if(delta < B){ bit.add(i+1, (bit.getSum(findIndex(S[i])+1) - bit.getSum(leftindex)+mod)%mod); } else bit.add(i+1, (bit.getSum(i+1) - bit.getSum(leftindex) + mod)%mod); } System.out.println(((bit.getSum(N+1) - bit.getSum(leftindex)+mod)%mod)); } }
Submission Info
Submission Time | |
---|---|
Task | C - Division into Two |
User | inmir |
Language | Java8 (OpenJDK 1.8.0) |
Score | 0 |
Code Size | 2133 Byte |
Status | WA |
Exec Time | 577 ms |
Memory | 63340 KB |
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 1100 | ||||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | s1.txt, s2.txt, s3.txt, s4.txt |
All | 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, s1.txt, s2.txt, s3.txt, s4.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | AC | 553 ms | 48144 KB |
02.txt | AC | 554 ms | 50520 KB |
03.txt | AC | 492 ms | 49600 KB |
04.txt | AC | 473 ms | 49432 KB |
05.txt | AC | 521 ms | 48852 KB |
06.txt | AC | 504 ms | 46884 KB |
07.txt | AC | 533 ms | 49512 KB |
08.txt | AC | 490 ms | 51392 KB |
09.txt | AC | 526 ms | 47940 KB |
10.txt | AC | 551 ms | 51092 KB |
11.txt | AC | 537 ms | 50488 KB |
12.txt | AC | 506 ms | 47364 KB |
13.txt | AC | 570 ms | 56492 KB |
14.txt | AC | 542 ms | 63340 KB |
15.txt | AC | 568 ms | 49388 KB |
16.txt | AC | 478 ms | 50900 KB |
17.txt | AC | 510 ms | 47860 KB |
18.txt | AC | 514 ms | 48828 KB |
19.txt | WA | 541 ms | 47080 KB |
20.txt | AC | 577 ms | 48816 KB |
21.txt | AC | 527 ms | 46236 KB |
22.txt | WA | 529 ms | 48792 KB |
23.txt | WA | 488 ms | 50072 KB |
24.txt | WA | 527 ms | 50192 KB |
25.txt | AC | 525 ms | 47560 KB |
26.txt | AC | 543 ms | 48636 KB |
27.txt | AC | 507 ms | 50108 KB |
28.txt | AC | 544 ms | 48688 KB |
29.txt | WA | 562 ms | 48432 KB |
30.txt | WA | 547 ms | 46960 KB |
31.txt | WA | 537 ms | 50732 KB |
32.txt | WA | 560 ms | 51156 KB |
33.txt | WA | 535 ms | 50544 KB |
34.txt | WA | 544 ms | 47352 KB |
35.txt | WA | 525 ms | 47992 KB |
36.txt | AC | 450 ms | 48368 KB |
37.txt | AC | 475 ms | 50620 KB |
38.txt | AC | 424 ms | 60920 KB |
39.txt | AC | 487 ms | 50132 KB |
40.txt | AC | 470 ms | 46052 KB |
41.txt | AC | 523 ms | 49368 KB |
42.txt | AC | 410 ms | 45876 KB |
43.txt | AC | 463 ms | 51848 KB |
44.txt | AC | 520 ms | 51940 KB |
45.txt | AC | 494 ms | 48504 KB |
46.txt | AC | 536 ms | 49192 KB |
47.txt | AC | 497 ms | 46584 KB |
48.txt | AC | 472 ms | 48680 KB |
49.txt | AC | 93 ms | 18772 KB |
50.txt | AC | 91 ms | 20688 KB |
51.txt | AC | 95 ms | 19924 KB |
52.txt | AC | 93 ms | 18896 KB |
53.txt | AC | 93 ms | 19668 KB |
54.txt | AC | 92 ms | 18516 KB |
55.txt | AC | 93 ms | 17748 KB |
56.txt | AC | 92 ms | 18900 KB |
57.txt | AC | 92 ms | 18644 KB |
58.txt | AC | 92 ms | 20692 KB |
59.txt | AC | 92 ms | 19412 KB |
60.txt | AC | 93 ms | 20564 KB |
61.txt | AC | 91 ms | 20564 KB |
62.txt | AC | 92 ms | 19924 KB |
63.txt | AC | 92 ms | 21716 KB |
64.txt | AC | 92 ms | 21716 KB |
s1.txt | AC | 93 ms | 20564 KB |
s2.txt | AC | 91 ms | 18516 KB |
s3.txt | AC | 92 ms | 19924 KB |
s4.txt | AC | 91 ms | 23764 KB |