Submission #3428251
Source Code Expand
#include<bits/stdc++.h> using namespace std; #define RI register int typedef long long LL; LL read() { LL q=0;char ch=' '; while(ch<'0'||ch>'9') ch=getchar(); while(ch>='0'&&ch<='9') q=q*10LL+(LL)(ch-'0'),ch=getchar(); return q; } const int mod=1e9+7,N=100005; const LL inf=2e18; int n,Log[N],bin[17],f[N][2],sum[N][2]; LL X[2],a[N],mi[17][N]; int qm(int x) {return x>=mod?x-mod:x;} void prework() { bin[0]=1;for(RI i=1;i<=16;++i) bin[i]=bin[i-1]<<1; Log[0]=-1;for(RI i=1;i<=n;++i) Log[i]=Log[i>>1]+1; for(RI j=1;j<=16;++j) for(RI i=1;i+bin[j]-1<=n;++i) mi[j][i]=min(mi[j-1][i],mi[j-1][i+bin[j-1]]); } LL getmi(int l,int r) { if(l>r) return inf; int t=Log[r-l+1]; return min(mi[t][l],mi[t][r-bin[t]+1]); } int findl(int x,int o) { int l=0,r=x-1,mid,re=0; while(l<=r) { mid=(l+r)>>1; if(getmi(mid+2,x)>=X[o]) re=mid,r=mid-1; else l=mid+1; } return re; } int main() { n=read(),X[0]=read(),X[1]=read(); for(RI i=1;i<=n;++i) a[i]=read(),mi[0][i]=a[i]-a[i-1]; prework(); f[0][0]=f[0][1]=sum[0][0]=sum[0][1]=1; a[n+1]=inf; for(RI i=1;i<=n;++i) { int l=findl(i,0); int r=upper_bound(a+1,a+i,a[i+1]-X[1])-a-1; if(l<=r) f[i][0]=qm(sum[r][1]-(l?sum[l-1][1]:0)+mod); l=findl(i,1); r=upper_bound(a+1,a+i,a[i+1]-X[0])-a-1; if(l<=r) f[i][1]=qm(sum[r][0]-(l?sum[l-1][0]:0)+mod); sum[i][0]=qm(sum[i-1][0]+f[i][0]); sum[i][1]=qm(sum[i-1][1]+f[i][1]); } printf("%d\n",qm(f[n][0]+f[n][1])); return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Division into Two |
User | litble |
Language | C++14 (GCC 5.4.1) |
Score | 1100 |
Code Size | 1488 Byte |
Status | AC |
Exec Time | 46 ms |
Memory | 16256 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1100 / 1100 | ||||
Status |
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Set Name | Test Cases |
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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 | 40 ms | 16256 KB |
02.txt | AC | 39 ms | 16256 KB |
03.txt | AC | 38 ms | 16256 KB |
04.txt | AC | 38 ms | 16256 KB |
05.txt | AC | 38 ms | 16256 KB |
06.txt | AC | 38 ms | 16256 KB |
07.txt | AC | 39 ms | 16256 KB |
08.txt | AC | 41 ms | 16256 KB |
09.txt | AC | 39 ms | 16256 KB |
10.txt | AC | 39 ms | 16256 KB |
11.txt | AC | 38 ms | 16256 KB |
12.txt | AC | 38 ms | 16256 KB |
13.txt | AC | 42 ms | 16256 KB |
14.txt | AC | 38 ms | 16256 KB |
15.txt | AC | 38 ms | 16256 KB |
16.txt | AC | 29 ms | 16256 KB |
17.txt | AC | 31 ms | 16256 KB |
18.txt | AC | 33 ms | 16256 KB |
19.txt | AC | 36 ms | 16256 KB |
20.txt | AC | 32 ms | 16256 KB |
21.txt | AC | 31 ms | 16256 KB |
22.txt | AC | 34 ms | 16256 KB |
23.txt | AC | 33 ms | 16256 KB |
24.txt | AC | 32 ms | 16256 KB |
25.txt | AC | 36 ms | 16256 KB |
26.txt | AC | 34 ms | 16256 KB |
27.txt | AC | 34 ms | 16256 KB |
28.txt | AC | 35 ms | 16256 KB |
29.txt | AC | 32 ms | 16256 KB |
30.txt | AC | 33 ms | 16256 KB |
31.txt | AC | 33 ms | 16256 KB |
32.txt | AC | 35 ms | 16256 KB |
33.txt | AC | 39 ms | 16256 KB |
34.txt | AC | 34 ms | 16256 KB |
35.txt | AC | 39 ms | 16256 KB |
36.txt | AC | 28 ms | 16256 KB |
37.txt | AC | 29 ms | 16256 KB |
38.txt | AC | 30 ms | 16256 KB |
39.txt | AC | 39 ms | 16256 KB |
40.txt | AC | 28 ms | 16256 KB |
41.txt | AC | 30 ms | 16256 KB |
42.txt | AC | 25 ms | 15616 KB |
43.txt | AC | 38 ms | 16256 KB |
44.txt | AC | 37 ms | 16256 KB |
45.txt | AC | 39 ms | 16256 KB |
46.txt | AC | 38 ms | 16256 KB |
47.txt | AC | 46 ms | 16256 KB |
48.txt | AC | 40 ms | 16256 KB |
49.txt | AC | 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 | 1 ms | 2304 KB |
56.txt | AC | 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 | 1 ms | 2304 KB |
62.txt | AC | 1 ms | 2304 KB |
63.txt | AC | 1 ms | 4352 KB |
64.txt | AC | 1 ms | 2304 KB |
s1.txt | AC | 1 ms | 2304 KB |
s2.txt | AC | 1 ms | 2304 KB |
s3.txt | AC | 1 ms | 4352 KB |
s4.txt | AC | 1 ms | 2304 KB |