#include <bits/stdc++.h>
using namespace std;
int n, ar[1000005], freq[1000005], ans;
int main(){
ios::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
cin >> n;
for (int i = 1; i<= n; i++){
cin >> ar[i];
if (freq[ar[i]+1]){
freq[ar[i]+1]--;
}
else{
ans++;
}
freq[ar[i]]++;
}
cout << ans << "\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
340 KB |
Output is correct |
2 |
Correct |
0 ms |
340 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
340 KB |
Output is correct |
5 |
Correct |
51 ms |
3412 KB |
Output is correct |
6 |
Correct |
57 ms |
3772 KB |
Output is correct |
7 |
Correct |
55 ms |
3108 KB |
Output is correct |
8 |
Correct |
42 ms |
3020 KB |
Output is correct |
9 |
Correct |
47 ms |
3316 KB |
Output is correct |
10 |
Correct |
48 ms |
3364 KB |
Output is correct |