Submission #3594434
Source Code Expand
#include <bits/stdc++.h> #define MOD 998244353 using namespace std; typedef long long ll; int main() { int n, lst = 0; cin >> n; vector<int> arr(n); copy(istream_iterator<int>(cin), istream_iterator<int>(), arr.begin()); vector<pair<int, int> > bel(n + 1, { -1, -1}); arr.push_back(arr[0]); for (int i = 1; i <= n; i++) { if (arr[i] == arr[i - 1]) { continue; } auto &val = bel[arr[i - 1]]; if (~val.second) { cout << 0 << endl; return 0; } val = {lst, i - 1}; lst = i; } if (arr[n - 1] == arr[n]) { bel[arr[n]].first = lst; } if (!lst) { ll ans = arr[0] == 1; for (int i = 1; i <= n; i++) { ans = ans * i % MOD; } cout << ans << endl; return 0; } if (-1 == bel[1].second) { cout << 0 << endl; return 0; } auto calc = [&] (auto & rg) { return rg.second - rg.first + (rg.first <= rg.second ? 1 : n + 1); }; int lim = calc(bel[1]), rem = 0; ll ans = 1; for (int i = 1; i <= n; i++) { if (-1 == bel[i].second) { ans = ans * rem-- % MOD; } else { int l = bel[i].first, r = bel[i].second, len = calc(bel[i]); int sum = (arr[r + 1] < i) + (arr[l - 1 + (!l ? n : 0)] < i); if (len > lim || (!sum && len != lim)) { cout << 0 << endl; return 0; } if (sum == 1) { rem += len - 1; } else if (sum == 2) { rem += lim + len - 2; ans = ans * (lim - len + 1) % MOD; } } } cout << ans << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Circular |
User | hawkomg |
Language | C++14 (GCC 5.4.1) |
Score | 900 |
Code Size | 1465 Byte |
Status | AC |
Exec Time | 100 ms |
Memory | 6144 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 900 / 900 | ||||
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, 65.txt, 66.txt, 67.txt, 68.txt, 69.txt, 70.txt, 71.txt, 72.txt, 73.txt, 74.txt, 75.txt, 76.txt, 77.txt, 78.txt, 79.txt, 80.txt, 81.txt, 82.txt, 83.txt, 84.txt, 85.txt, 86.txt, 87.txt, 88.txt, 89.txt, 90.txt, 91.txt, 92.txt, 93.txt, 94.txt, 95.txt, 96.txt, 97.txt, 98.txt, 99.txt, s1.txt, s2.txt, s3.txt, s4.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | AC | 96 ms | 4988 KB |
02.txt | AC | 91 ms | 4864 KB |
03.txt | AC | 85 ms | 4864 KB |
04.txt | AC | 76 ms | 4864 KB |
05.txt | AC | 70 ms | 4864 KB |
06.txt | AC | 66 ms | 4864 KB |
07.txt | AC | 60 ms | 4864 KB |
08.txt | AC | 55 ms | 4864 KB |
09.txt | AC | 54 ms | 4864 KB |
10.txt | AC | 97 ms | 4864 KB |
11.txt | AC | 95 ms | 4864 KB |
12.txt | AC | 92 ms | 4864 KB |
13.txt | AC | 86 ms | 4864 KB |
14.txt | AC | 76 ms | 4864 KB |
15.txt | AC | 73 ms | 4864 KB |
16.txt | AC | 66 ms | 4864 KB |
17.txt | AC | 60 ms | 4864 KB |
18.txt | AC | 53 ms | 4864 KB |
19.txt | AC | 51 ms | 4864 KB |
20.txt | AC | 100 ms | 4864 KB |
21.txt | AC | 95 ms | 6016 KB |
22.txt | AC | 87 ms | 4864 KB |
23.txt | AC | 84 ms | 4864 KB |
24.txt | AC | 75 ms | 4864 KB |
25.txt | AC | 70 ms | 4864 KB |
26.txt | AC | 65 ms | 4864 KB |
27.txt | AC | 58 ms | 4864 KB |
28.txt | AC | 55 ms | 4864 KB |
29.txt | AC | 52 ms | 4864 KB |
30.txt | AC | 98 ms | 4864 KB |
31.txt | AC | 95 ms | 4864 KB |
32.txt | AC | 96 ms | 4864 KB |
33.txt | AC | 88 ms | 4864 KB |
34.txt | AC | 76 ms | 4864 KB |
35.txt | AC | 71 ms | 4864 KB |
36.txt | AC | 66 ms | 4864 KB |
37.txt | AC | 60 ms | 4864 KB |
38.txt | AC | 54 ms | 4864 KB |
39.txt | AC | 52 ms | 5888 KB |
40.txt | AC | 98 ms | 4864 KB |
41.txt | AC | 50 ms | 4864 KB |
42.txt | AC | 51 ms | 4864 KB |
43.txt | AC | 97 ms | 4864 KB |
44.txt | AC | 89 ms | 4864 KB |
45.txt | AC | 95 ms | 4864 KB |
46.txt | AC | 58 ms | 5888 KB |
47.txt | AC | 90 ms | 4864 KB |
48.txt | AC | 62 ms | 4864 KB |
49.txt | AC | 52 ms | 4864 KB |
50.txt | AC | 50 ms | 4864 KB |
51.txt | AC | 50 ms | 4864 KB |
52.txt | AC | 51 ms | 4864 KB |
53.txt | AC | 50 ms | 4864 KB |
54.txt | AC | 51 ms | 5888 KB |
55.txt | AC | 53 ms | 6016 KB |
56.txt | AC | 51 ms | 4864 KB |
57.txt | AC | 51 ms | 4864 KB |
58.txt | AC | 51 ms | 4864 KB |
59.txt | AC | 51 ms | 4864 KB |
60.txt | AC | 93 ms | 4864 KB |
61.txt | AC | 89 ms | 4864 KB |
62.txt | AC | 87 ms | 4864 KB |
63.txt | AC | 83 ms | 4864 KB |
64.txt | AC | 74 ms | 4864 KB |
65.txt | AC | 66 ms | 5888 KB |
66.txt | AC | 64 ms | 4864 KB |
67.txt | AC | 57 ms | 4864 KB |
68.txt | AC | 50 ms | 4864 KB |
69.txt | AC | 50 ms | 4864 KB |
70.txt | AC | 97 ms | 6144 KB |
71.txt | AC | 93 ms | 4864 KB |
72.txt | AC | 86 ms | 6016 KB |
73.txt | AC | 84 ms | 5888 KB |
74.txt | AC | 74 ms | 4864 KB |
75.txt | AC | 66 ms | 4864 KB |
76.txt | AC | 64 ms | 4864 KB |
77.txt | AC | 59 ms | 4864 KB |
78.txt | AC | 53 ms | 4864 KB |
79.txt | AC | 49 ms | 4864 KB |
80.txt | AC | 93 ms | 4864 KB |
81.txt | AC | 91 ms | 4864 KB |
82.txt | AC | 92 ms | 4864 KB |
83.txt | AC | 84 ms | 4864 KB |
84.txt | AC | 74 ms | 4864 KB |
85.txt | AC | 73 ms | 5888 KB |
86.txt | AC | 65 ms | 4864 KB |
87.txt | AC | 58 ms | 4864 KB |
88.txt | AC | 49 ms | 4864 KB |
89.txt | AC | 1 ms | 256 KB |
90.txt | AC | 1 ms | 256 KB |
91.txt | AC | 1 ms | 256 KB |
92.txt | AC | 1 ms | 256 KB |
93.txt | AC | 1 ms | 256 KB |
94.txt | AC | 1 ms | 256 KB |
95.txt | AC | 1 ms | 256 KB |
96.txt | AC | 1 ms | 256 KB |
97.txt | AC | 1 ms | 256 KB |
98.txt | AC | 1 ms | 256 KB |
99.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 |