#include <iostream>
using namespace std;
const int MAXN = 1e6 + 7;
int a[MAXN], f[MAXN];
int main() {
int n;
cin >> n;
for(int i = 1; i <= n; i++)
cin >> a[i];
int ans = 0;
for(int i = n; i > 0; i--){
f[a[i]]++;
if(f[a[i]-1] == 1)
f[a[i]-1]--;
else
ans++;
}
cout << ans << endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
2 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
3 |
Incorrect |
2 ms |
340 KB |
Output isn't correct |
4 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
5 |
Incorrect |
204 ms |
3340 KB |
Output isn't correct |
6 |
Incorrect |
178 ms |
3704 KB |
Output isn't correct |
7 |
Incorrect |
169 ms |
3160 KB |
Output isn't correct |
8 |
Incorrect |
175 ms |
3236 KB |
Output isn't correct |
9 |
Incorrect |
156 ms |
3188 KB |
Output isn't correct |
10 |
Incorrect |
171 ms |
3380 KB |
Output isn't correct |