#include <bits/stdc++.h>
using namespace std;
int n, dd[1000006], a[1000006], res(0);
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n;
fill(dd + 1, dd + 1000005, 0);
for (int i = 0; i < n; i++) cin >> a[i];
for (int i = 0; i < n; i++)
{
if (dd[a[i] + 1] > 0) dd[a[i] + 1]--;
else res++;
dd[a[i]]++;
}
cout << res;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
9988 KB |
Output is correct |
2 |
Correct |
0 ms |
9988 KB |
Output is correct |
3 |
Correct |
0 ms |
9988 KB |
Output is correct |
4 |
Correct |
0 ms |
9988 KB |
Output is correct |
5 |
Correct |
59 ms |
9988 KB |
Output is correct |
6 |
Correct |
73 ms |
9988 KB |
Output is correct |
7 |
Correct |
56 ms |
9988 KB |
Output is correct |
8 |
Correct |
66 ms |
9988 KB |
Output is correct |
9 |
Correct |
93 ms |
9988 KB |
Output is correct |
10 |
Correct |
73 ms |
9988 KB |
Output is correct |