Submission #2209022
Source Code Expand
#include<cstdio> #include<algorithm> using namespace std; int dp[101][101][101],a[101],m,mo,n,ans; bool cmp(int aa,int bb){return(aa<bb);} int main() { scanf("%d",&n); m=2*n-1; for(int i=1;i<=m;i++) scanf("%d",&a[i]); sort(a+1,a+1+m,cmp); dp[n][1][1]=1; mo=1000000007; for(int i=n-1;i>=1;i--) { int l=0,r=0; if(a[i]!=a[i+1])l=1; if(a[m-i+1]!=a[m-i]) r=1; for(int j=2*(n-i)-1;j>=1;j--) for(int k=1+l;k<=j+l;k++) for(int ii=1;ii<=j+l+r;ii++) { if(ii>k) dp[i][k+1][j+l+r-(ii-k-1)]=(dp[i][k+1][j+l+r-(ii-k-1)]+dp[i+1][k-l][j])%mo; if(ii==k) dp[i][k][j+l+r]=(dp[i][k][j+l+r]+dp[i+1][k-l][j])%mo; if(ii<k) dp[i][ii][j+l+r-(k-ii-1)]=(dp[i][ii][j+l+r-(k-ii-1)]+dp[i+1][k-l][j])%mo; } } ans=0; for(int i=1;i<=m;i++) for(int j=1;j<=m;j++) ans=(ans+dp[1][i][j])%mo; printf("%d\n",ans); }
Submission Info
Submission Time | |
---|---|
Task | F - Prefix Median |
User | ytc020306 |
Language | C++14 (GCC 5.4.1) |
Score | 2000 |
Code Size | 847 Byte |
Status | AC |
Exec Time | 15 ms |
Memory | 1280 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:8:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ ./Main.cpp:10:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1;i<=m;i++) scanf("%d",&a[i]); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 2000 / 2000 | ||||
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, 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 |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
00_example_01.txt | AC | 1 ms | 128 KB |
00_example_02.txt | AC | 1 ms | 128 KB |
00_example_03.txt | AC | 1 ms | 256 KB |
01.txt | AC | 15 ms | 1280 KB |
02.txt | AC | 11 ms | 1152 KB |
03.txt | AC | 2 ms | 640 KB |
04.txt | AC | 1 ms | 512 KB |
05.txt | AC | 1 ms | 384 KB |
06.txt | AC | 5 ms | 896 KB |
07.txt | AC | 15 ms | 1280 KB |
08.txt | AC | 1 ms | 384 KB |
09.txt | AC | 15 ms | 1280 KB |
10.txt | AC | 1 ms | 128 KB |
11.txt | AC | 1 ms | 256 KB |
12.txt | AC | 1 ms | 384 KB |
13.txt | AC | 4 ms | 768 KB |
14.txt | AC | 7 ms | 1024 KB |
15.txt | AC | 1 ms | 128 KB |
16.txt | AC | 15 ms | 1280 KB |
17.txt | AC | 1 ms | 256 KB |
18.txt | AC | 0 ms | 128 KB |
19.txt | AC | 0 ms | 128 KB |
20.txt | AC | 1 ms | 256 KB |
21.txt | AC | 1 ms | 256 KB |
22.txt | AC | 0 ms | 128 KB |
23.txt | AC | 2 ms | 512 KB |
24.txt | AC | 1 ms | 384 KB |
25.txt | AC | 2 ms | 512 KB |
26.txt | AC | 3 ms | 640 KB |
27.txt | AC | 1 ms | 384 KB |
28.txt | AC | 13 ms | 1280 KB |
29.txt | AC | 1 ms | 384 KB |
30.txt | AC | 3 ms | 640 KB |
31.txt | AC | 1 ms | 128 KB |
32.txt | AC | 2 ms | 640 KB |
33.txt | AC | 0 ms | 128 KB |
34.txt | AC | 2 ms | 512 KB |
35.txt | AC | 11 ms | 1152 KB |
36.txt | AC | 0 ms | 128 KB |
37.txt | AC | 11 ms | 1152 KB |
38.txt | AC | 2 ms | 640 KB |
39.txt | AC | 1 ms | 512 KB |
40.txt | AC | 1 ms | 384 KB |
41.txt | AC | 5 ms | 896 KB |
42.txt | AC | 15 ms | 1280 KB |
43.txt | AC | 1 ms | 384 KB |
44.txt | AC | 15 ms | 1280 KB |
45.txt | AC | 1 ms | 128 KB |
46.txt | AC | 1 ms | 256 KB |
47.txt | AC | 1 ms | 384 KB |
48.txt | AC | 4 ms | 768 KB |
49.txt | AC | 7 ms | 1024 KB |
50.txt | AC | 1 ms | 128 KB |
51.txt | AC | 14 ms | 1280 KB |