Submission #4015849
Source Code Expand
#include<bits/stdc++.h> using namespace std; const long long P=1000000007ll; long long n,k,f[10001]; long long w(long long ,int ); int main( ) { int i,j; cin>>n>>k; f[0]=1ll; for(i=1;i<n;++i) for(j=i;j;--j) f[j]=(f[j+1]+f[j-1])%P,f[0]=f[1]; cout<<f[n-k]*w(2ll,n-k-1)%P; return 0; } long long w(long long a,int x) { if(x<0) return 1; long long s=1ll; while(x) if(x&1) (s*=a)%=P,(a*=a)%=P,x>>=1; return s; }
Submission Info
Submission Time | |
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Task | F - Solitaire |
User | luogu_bot5 |
Language | C++ (GCC 5.4.1) |
Score | 0 |
Code Size | 518 Byte |
Status | TLE |
Exec Time | 2103 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 1200 | ||||||||
Status |
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|
Set Name | Test Cases |
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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 |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
00_example_01.txt | AC | 1 ms | 256 KB |
00_example_02.txt | TLE | 2103 ms | 256 KB |
00_example_03.txt | TLE | 2103 ms | 256 KB |
01.txt | AC | 1 ms | 256 KB |
02.txt | TLE | 2103 ms | 256 KB |
03.txt | AC | 1 ms | 256 KB |
04.txt | TLE | 2103 ms | 256 KB |
05.txt | AC | 1 ms | 256 KB |
06.txt | TLE | 2103 ms | 256 KB |
07.txt | TLE | 2103 ms | 256 KB |
08.txt | TLE | 2103 ms | 256 KB |
09.txt | TLE | 2103 ms | 256 KB |
10.txt | TLE | 2103 ms | 256 KB |
11.txt | AC | 1 ms | 256 KB |
12.txt | TLE | 2103 ms | 256 KB |
13.txt | TLE | 2103 ms | 256 KB |
14.txt | TLE | 2103 ms | 256 KB |
15.txt | TLE | 2103 ms | 256 KB |
16.txt | TLE | 2103 ms | 256 KB |
17.txt | TLE | 2103 ms | 256 KB |
18.txt | TLE | 2103 ms | 256 KB |
19.txt | TLE | 2103 ms | 256 KB |
20.txt | TLE | 2103 ms | 256 KB |
21.txt | AC | 1 ms | 256 KB |
22.txt | AC | 13 ms | 256 KB |
23.txt | TLE | 2103 ms | 256 KB |