Submission #1573598
Source Code Expand
//by yjz #include<bits/stdc++.h> using namespace std; #define FF first #define SS second #define PB push_back #define MP make_pair #define bged(v) (v).begin(),(v).end() #define foreach(it,s) for(__typeof((s).begin()) it=(s).begin();it!=(s).end();it++) typedef long long ll; const int Imx=2147483647; const ll Lbig=2e18; const int mod=1e9+7; //My i/o stream struct fastio { char s[100000]; int it,len; fastio(){it=len=0;} inline char get() { if(it<len)return s[it++];it=0; len=fread(s,1,100000,stdin); if(len==0)return EOF;else return s[it++]; } bool notend() { char c=get(); while(c==' '||c=='\n')c=get(); if(it>0)it--; return c!=EOF; } }_buff; #define geti(x) x=getnum() #define getii(x,y) geti(x),geti(y) #define getiii(x,y,z) getii(x,y),geti(z) #define puti(x) putnum(x),putchar(' ') #define putii(x,y) puti(x),puti(y) #define putiii(x,y,z) putii(x,y),puti(z) #define putsi(x) putnum(x),putchar('\n') #define putsii(x,y) puti(x),putsi(y) #define putsiii(x,y,z) putii(x,y),putsi(z) inline ll getnum() { ll r=0;bool ng=0;char c;c=_buff.get(); while(c!='-'&&(c<'0'||c>'9'))c=_buff.get(); if(c=='-')ng=1,c=_buff.get(); while(c>='0'&&c<='9')r=r*10+c-'0',c=_buff.get(); return ng?-r:r; } template<class T> inline void putnum(T x) { if(x<0)putchar('-'),x=-x; register short a[20]={},sz=0; while(x)a[sz++]=x%10,x/=10; if(sz==0)putchar('0'); for(int i=sz-1;i>=0;i--)putchar('0'+a[i]); } inline char getreal(){char c=_buff.get();while(c==' '||c=='\n')c=_buff.get();return c;} int n; ll a[100111],A,B,dp[100111]; int main() { getiii(n,A,B); if(A>B)swap(A,B); for(int i=1;i<=n;i++)geti(a[i]); dp[0]=1;a[0]=-B; a[n+1]=a[n]+B; for(int i=2;i<n;i++) { if(a[i+1]-a[i-1]<A) { puts("0"); return 0; } } n++; ll ans=0; int it=0,itr=0; for(int i=1;i<=n;i++) { while(itr+1<i&&a[i]-a[itr+1]>=B)itr++; // cerr<<i<<":"<<it<<","<<itr<<endl; dp[i]=dp[i-1]; if(it<=itr) { dp[i]=(dp[i]+dp[itr])%mod; if(it>0)dp[i]=(dp[i]-dp[it-1]+mod)%mod; } if(i>1&&a[i]-a[i-1]<A)it=max(it,i-1); // cerr<<dp[i]<<endl; } cout<<(dp[n]-dp[n-1]+mod)%mod<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Division into Two |
User | vjudge5 |
Language | C++14 (GCC 5.4.1) |
Score | 1100 |
Code Size | 2106 Byte |
Status | AC |
Exec Time | 7 ms |
Memory | 1920 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1100 / 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 | 7 ms | 1920 KB |
02.txt | AC | 7 ms | 1920 KB |
03.txt | AC | 7 ms | 1920 KB |
04.txt | AC | 7 ms | 1920 KB |
05.txt | AC | 6 ms | 1920 KB |
06.txt | AC | 7 ms | 1920 KB |
07.txt | AC | 7 ms | 1920 KB |
08.txt | AC | 7 ms | 1920 KB |
09.txt | AC | 7 ms | 1920 KB |
10.txt | AC | 7 ms | 1920 KB |
11.txt | AC | 7 ms | 1920 KB |
12.txt | AC | 6 ms | 1920 KB |
13.txt | AC | 7 ms | 1920 KB |
14.txt | AC | 7 ms | 1920 KB |
15.txt | AC | 7 ms | 1920 KB |
16.txt | AC | 4 ms | 1920 KB |
17.txt | AC | 5 ms | 1920 KB |
18.txt | AC | 5 ms | 1920 KB |
19.txt | AC | 5 ms | 1920 KB |
20.txt | AC | 5 ms | 1920 KB |
21.txt | AC | 5 ms | 1920 KB |
22.txt | AC | 5 ms | 1920 KB |
23.txt | AC | 4 ms | 1920 KB |
24.txt | AC | 5 ms | 1920 KB |
25.txt | AC | 6 ms | 1920 KB |
26.txt | AC | 6 ms | 1920 KB |
27.txt | AC | 6 ms | 1920 KB |
28.txt | AC | 6 ms | 1920 KB |
29.txt | AC | 5 ms | 1920 KB |
30.txt | AC | 5 ms | 1920 KB |
31.txt | AC | 5 ms | 1920 KB |
32.txt | AC | 5 ms | 1920 KB |
33.txt | AC | 6 ms | 1920 KB |
34.txt | AC | 4 ms | 1920 KB |
35.txt | AC | 6 ms | 1920 KB |
36.txt | AC | 4 ms | 1920 KB |
37.txt | AC | 4 ms | 1920 KB |
38.txt | AC | 4 ms | 1920 KB |
39.txt | AC | 7 ms | 1920 KB |
40.txt | AC | 4 ms | 1920 KB |
41.txt | AC | 4 ms | 1920 KB |
42.txt | AC | 3 ms | 1152 KB |
43.txt | AC | 7 ms | 1920 KB |
44.txt | AC | 7 ms | 1920 KB |
45.txt | AC | 7 ms | 1920 KB |
46.txt | AC | 7 ms | 1920 KB |
47.txt | AC | 6 ms | 1152 KB |
48.txt | AC | 6 ms | 1152 KB |
49.txt | AC | 1 ms | 256 KB |
50.txt | AC | 1 ms | 256 KB |
51.txt | AC | 1 ms | 256 KB |
52.txt | AC | 1 ms | 256 KB |
53.txt | AC | 1 ms | 256 KB |
54.txt | AC | 1 ms | 256 KB |
55.txt | AC | 1 ms | 256 KB |
56.txt | AC | 1 ms | 256 KB |
57.txt | AC | 1 ms | 256 KB |
58.txt | AC | 1 ms | 256 KB |
59.txt | AC | 1 ms | 256 KB |
60.txt | AC | 1 ms | 256 KB |
61.txt | AC | 1 ms | 256 KB |
62.txt | AC | 1 ms | 256 KB |
63.txt | AC | 1 ms | 256 KB |
64.txt | AC | 1 ms | 256 KB |
s1.txt | AC | 1 ms | 256 KB |
s2.txt | AC | 1 ms | 256 KB |
s3.txt | AC | 1 ms | 256 KB |
s4.txt | AC | 1 ms | 256 KB |