Submission #1439860


Source Code Expand

#include<cstdio>
#include<algorithm>
using namespace std;
long long n,a,b,s[200000],f[200000],g[200000],mod=1000000007;
int main()
{
	scanf("%lld%lld%lld",&n,&a,&b);
	if(a>b)swap(a,b);
	for(int i=1;i<=n;i++)scanf("%lld",s+i);
	s[0]=-b;
	f[0]=g[0]=1;
	for(int i=2;i<n;i++)
		if(s[i+1]-s[i-1]<a){puts("0");return 0;}
	long long sf=0,sg=0,pf=0,pg=0;
	for(int i=2;i<=n;i++)
	{
		for(;s[i]-s[pf]>=a;pf++)sf=(sf+f[pf])%mod;
		for(;s[i]-s[pg]>=b;pg++)sg=(sg+g[pg])%mod;
		f[i-1]=sg;g[i-1]=sf;
		if(s[i]-s[i-1]<b)sf=0,pf=i-1;
		if(s[i]-s[i-1]<a)sg=0,pg=i-1;
		//printf("sf=%lld,sg=%lld,pf=%lld,pg=%lld\n",sf,sg,pf,pg);
	}
	for(int i=pf;i<n;i++)sf=(sf+f[i])%mod;
	for(int i=pg;i<n;i++)sg=(sg+g[i])%mod;
	printf("%lld\n",(sf+sg)%mod);
	//printf("pf=%lld,pg=%lld\n",pf,pg);
	//for(int i=0;i<=n;i++)printf("(f,g)[%d]=%lld,%lld\n",i,f[i],g[i]);
	return 0;
}

Submission Info

Submission Time
Task C - Division into Two
User wangrq
Language C++14 (Clang 3.8.0)
Score 0
Code Size 873 Byte
Status WA
Exec Time 23 ms
Memory 3584 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 1100
Status
AC × 4
AC × 37
WA × 31
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 WA 22 ms 3584 KB
02.txt WA 21 ms 3584 KB
03.txt AC 21 ms 3584 KB
04.txt WA 20 ms 3584 KB
05.txt AC 21 ms 3584 KB
06.txt WA 20 ms 3584 KB
07.txt WA 21 ms 3584 KB
08.txt WA 21 ms 3584 KB
09.txt WA 22 ms 3584 KB
10.txt WA 22 ms 3584 KB
11.txt AC 21 ms 3584 KB
12.txt WA 22 ms 3584 KB
13.txt WA 22 ms 3584 KB
14.txt WA 21 ms 3584 KB
15.txt WA 20 ms 3584 KB
16.txt AC 16 ms 3584 KB
17.txt AC 18 ms 3584 KB
18.txt AC 19 ms 3584 KB
19.txt AC 17 ms 3584 KB
20.txt WA 17 ms 3584 KB
21.txt WA 17 ms 3584 KB
22.txt AC 18 ms 3584 KB
23.txt WA 15 ms 3584 KB
24.txt WA 16 ms 3584 KB
25.txt WA 19 ms 3584 KB
26.txt WA 19 ms 3584 KB
27.txt WA 19 ms 3584 KB
28.txt WA 19 ms 3584 KB
29.txt AC 18 ms 3584 KB
30.txt WA 18 ms 3584 KB
31.txt AC 18 ms 3584 KB
32.txt WA 18 ms 3584 KB
33.txt WA 19 ms 3584 KB
34.txt WA 16 ms 3584 KB
35.txt AC 20 ms 3584 KB
36.txt WA 15 ms 3584 KB
37.txt AC 15 ms 3584 KB
38.txt AC 15 ms 3584 KB
39.txt AC 23 ms 3584 KB
40.txt AC 14 ms 3584 KB
41.txt AC 15 ms 3584 KB
42.txt AC 12 ms 3072 KB
43.txt WA 22 ms 3584 KB
44.txt WA 21 ms 3584 KB
45.txt WA 22 ms 3584 KB
46.txt WA 22 ms 3584 KB
47.txt AC 19 ms 3072 KB
48.txt AC 19 ms 3072 KB
49.txt WA 1 ms 2304 KB
50.txt AC 1 ms 2304 KB
51.txt AC 1 ms 2304 KB
52.txt AC 1 ms 2304 KB
53.txt AC 1 ms 2304 KB
54.txt AC 1 ms 2304 KB
55.txt AC 2 ms 2304 KB
56.txt WA 1 ms 2304 KB
57.txt AC 1 ms 2304 KB
58.txt AC 1 ms 2304 KB
59.txt AC 1 ms 2304 KB
60.txt AC 1 ms 2304 KB
61.txt AC 2 ms 2304 KB
62.txt AC 1 ms 2304 KB
63.txt AC 1 ms 2304 KB
64.txt AC 1 ms 2304 KB
s1.txt AC 1 ms 2304 KB
s2.txt AC 2 ms 2304 KB
s3.txt AC 1 ms 2304 KB
s4.txt AC 1 ms 2304 KB