Submission #1709953
Source Code Expand
#include<stdio.h> #include<vector> #include<algorithm> using namespace std; typedef long long ll; ll mod = 1000000007; ll dp[52][101][101]; int main() { int num; scanf("%d", &num); vector<int>v; for (int i = 0; i < num + num - 1; i++) { int z; scanf("%d", &z); v.push_back(z); } sort(v.begin(), v.end()); dp[1][1][0] = 1; for (int i = 1; i < num; i++) { int a1 = int(v[num - 1 - i] != v[num - i]), a2 = int(v[num - 1 + i] != v[num - 2 + i]); for (int j = 1; j <= i + i - 1; j++) { for (int k = 0; k < j; k++) { for (int l = 0; l < k + a1; l++) { dp[i + 1][j + a1 + a2 - (k + a1 - l - 1)][l] += dp[i][j][k]; dp[i + 1][j + a1 + a2 - (k + a1 - l - 1)][l] %= mod; } dp[i + 1][j + a1 + a2][k + a1] += dp[i][j][k]; dp[i + 1][j + a1 + a2][k + a1] %= mod; for (int l = k + a1 + 1; l < j + a1 + a2; l++) { dp[i + 1][j + a1 + a2 - (l - 1 - k - a1)][k + a1 + 1] += dp[i][j][k]; dp[i + 1][j + a1 + a2 - (l - 1 - k - a1)][k + a1 + 1] %= mod; } } } } ll ans = 0; for (int i = 0; i <= num + num - 1; i++) { for (int j = 0; j < i; j++) { ans = (ans + dp[num][i][j]) % mod; } } printf("%lld\n", ans); }
Submission Info
Submission Time | |
---|---|
Task | F - Prefix Median |
User | DEGwer |
Language | C++14 (GCC 5.4.1) |
Score | 2000 |
Code Size | 1236 Byte |
Status | AC |
Exec Time | 47 ms |
Memory | 2816 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:11:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &num); ^ ./Main.cpp:16:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &z); ^
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 | 256 KB |
00_example_02.txt | AC | 1 ms | 256 KB |
00_example_03.txt | AC | 2 ms | 384 KB |
01.txt | AC | 47 ms | 2816 KB |
02.txt | AC | 34 ms | 2816 KB |
03.txt | AC | 7 ms | 2816 KB |
04.txt | AC | 4 ms | 640 KB |
05.txt | AC | 2 ms | 512 KB |
06.txt | AC | 17 ms | 2816 KB |
07.txt | AC | 47 ms | 2816 KB |
08.txt | AC | 2 ms | 512 KB |
09.txt | AC | 47 ms | 2816 KB |
10.txt | AC | 1 ms | 256 KB |
11.txt | AC | 1 ms | 384 KB |
12.txt | AC | 2 ms | 512 KB |
13.txt | AC | 13 ms | 2816 KB |
14.txt | AC | 22 ms | 2816 KB |
15.txt | AC | 1 ms | 256 KB |
16.txt | AC | 47 ms | 2816 KB |
17.txt | AC | 2 ms | 384 KB |
18.txt | AC | 1 ms | 256 KB |
19.txt | AC | 1 ms | 256 KB |
20.txt | AC | 2 ms | 384 KB |
21.txt | AC | 2 ms | 384 KB |
22.txt | AC | 1 ms | 256 KB |
23.txt | AC | 6 ms | 2816 KB |
24.txt | AC | 2 ms | 512 KB |
25.txt | AC | 6 ms | 2816 KB |
26.txt | AC | 8 ms | 2816 KB |
27.txt | AC | 2 ms | 512 KB |
28.txt | AC | 40 ms | 2816 KB |
29.txt | AC | 3 ms | 640 KB |
30.txt | AC | 8 ms | 2816 KB |
31.txt | AC | 1 ms | 256 KB |
32.txt | AC | 7 ms | 2816 KB |
33.txt | AC | 1 ms | 256 KB |
34.txt | AC | 5 ms | 2816 KB |
35.txt | AC | 34 ms | 2816 KB |
36.txt | AC | 1 ms | 256 KB |
37.txt | AC | 34 ms | 2816 KB |
38.txt | AC | 7 ms | 2816 KB |
39.txt | AC | 4 ms | 640 KB |
40.txt | AC | 2 ms | 512 KB |
41.txt | AC | 16 ms | 2816 KB |
42.txt | AC | 46 ms | 2816 KB |
43.txt | AC | 2 ms | 512 KB |
44.txt | AC | 46 ms | 2816 KB |
45.txt | AC | 1 ms | 256 KB |
46.txt | AC | 1 ms | 384 KB |
47.txt | AC | 2 ms | 512 KB |
48.txt | AC | 13 ms | 2816 KB |
49.txt | AC | 22 ms | 2816 KB |
50.txt | AC | 1 ms | 256 KB |
51.txt | AC | 45 ms | 2816 KB |