Submission #2132797
Source Code Expand
#include<cstdio>
#include<cmath>
#include<algorithm>
#define LL long long
#define fo(i,j,k) for(int i=j;i<=k;i++)
#define fd(i,j,k) for(int i=j;i>=k;i--)
#define fr(i,j) for(int i=beg[j];i;i=nex[i])
using namespace std;
int const mn=2e3+3,mo=1e9+7;
int n,K,f[mn][mn][2];
int main(){
scanf("%d%d",&n,&K);
f[n+1][0][1]=1;
fd(i,n+1,2){
fd(j,n+1-i,0)f[i][j][0]=(f[i][j][0]+f[i][j+1][0])%mo;
fo(j,0,n+1-i)fo(k,0,1){
f[i-1][j+1][1]=(f[i-1][j+1][1]+f[i][j][k])%mo;
f[i-1][j][0]=(f[i-1][j][0]+f[i][j][k])%mo;
}
}
int ans=f[1][n-K][0];
fo(i,1,n-K-1)ans=2*ans%mo;
printf("%d",ans);
return 0;
}
Submission Info
Submission Time
2018-02-24 23:05:29+0900
Task
F - Solitaire
User
chunkitlau
Language
C++14 (GCC 5.4.1)
Score
1200
Code Size
629 Byte
Status
AC
Exec Time
32 ms
Memory
30976 KB
Compile Error
./Main.cpp: In function ‘int main()’:
./Main.cpp:12:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&n,&K);
^
Judge Result
Set Name
Sample
All
Score / Max Score
0 / 0
1200 / 1200
Status
Set Name
Test Cases
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
0 ms
128 KB
00_example_02.txt
AC
1 ms
256 KB
00_example_03.txt
AC
32 ms
30976 KB
01.txt
AC
0 ms
256 KB
02.txt
AC
11 ms
18048 KB
03.txt
AC
1 ms
384 KB
04.txt
AC
1 ms
2816 KB
05.txt
AC
0 ms
128 KB
06.txt
AC
0 ms
128 KB
07.txt
AC
1 ms
256 KB
08.txt
AC
1 ms
384 KB
09.txt
AC
30 ms
30848 KB
10.txt
AC
0 ms
256 KB
11.txt
AC
1 ms
256 KB
12.txt
AC
29 ms
30848 KB
13.txt
AC
1 ms
2816 KB
14.txt
AC
32 ms
30976 KB
15.txt
AC
4 ms
9344 KB
16.txt
AC
32 ms
30976 KB
17.txt
AC
32 ms
30976 KB
18.txt
AC
32 ms
30976 KB
19.txt
AC
32 ms
30976 KB
20.txt
AC
32 ms
30976 KB
21.txt
AC
0 ms
128 KB
22.txt
AC
32 ms
30976 KB
23.txt
AC
32 ms
30976 KB