#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcountll
#define ll long long
#define mp make_pair
#define f first
#define s second
#define Time (double)clock()/CLOCKS_PER_SEC
const int N = 2e5 + 7, MOD = 1000 * 1000 * 1000 + 7;
int len[N], cnt[N], a[N];
signed main() {
#ifdef HOME
freopen("input.txt", "r", stdin);
#else
#define endl '\n'
ios_base::sync_with_stdio(0); cin.tie(0);
#endif
int n;
cin >> n;
for (int i = 1; i <= n; ++i)
cin >> a[i];
for (int i = 1; i <= n; ++i) {
len[i] = 1;
cnt[i] = 1;
for (int j = 1; j < i; ++j) {
if (a[j] < a[i]) {
if (len[j] + 1 > len[i]) {
len[i] = len[j] + 1;
cnt[i] = cnt[j];
}
else if (len[j] + 1 == len[i]) {
cnt[i] = (cnt[i] + cnt[j]) % MOD;
}
}
}
}
cout << cnt[n] << endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
5 ms |
384 KB |
Output isn't correct |
2 |
Incorrect |
5 ms |
384 KB |
Output isn't correct |
3 |
Incorrect |
4 ms |
256 KB |
Output isn't correct |
4 |
Incorrect |
5 ms |
384 KB |
Output isn't correct |
5 |
Incorrect |
5 ms |
384 KB |
Output isn't correct |
6 |
Incorrect |
4 ms |
384 KB |
Output isn't correct |
7 |
Incorrect |
6 ms |
384 KB |
Output isn't correct |
8 |
Incorrect |
6 ms |
384 KB |
Output isn't correct |
9 |
Incorrect |
6 ms |
384 KB |
Output isn't correct |
10 |
Incorrect |
6 ms |
384 KB |
Output isn't correct |
11 |
Execution timed out |
1088 ms |
3584 KB |
Time limit exceeded |
12 |
Execution timed out |
1097 ms |
3320 KB |
Time limit exceeded |
13 |
Execution timed out |
1087 ms |
3200 KB |
Time limit exceeded |
14 |
Execution timed out |
1091 ms |
3320 KB |
Time limit exceeded |
15 |
Execution timed out |
1094 ms |
3808 KB |
Time limit exceeded |
16 |
Execution timed out |
1087 ms |
4560 KB |
Time limit exceeded |
17 |
Execution timed out |
1084 ms |
4184 KB |
Time limit exceeded |
18 |
Execution timed out |
1092 ms |
3872 KB |
Time limit exceeded |
19 |
Execution timed out |
1094 ms |
3920 KB |
Time limit exceeded |
20 |
Execution timed out |
1086 ms |
4008 KB |
Time limit exceeded |