#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
int n, ans;
int cnt[1000006];
signed main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin>>n;
for(int i=0;i<n;i++){
int x;cin>>x;
cnt[x+1] ? cnt[x+1]--:ans++;
cnt[x]++;
}cout<<ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
52 ms |
3900 KB |
Output is correct |
6 |
Correct |
59 ms |
3752 KB |
Output is correct |
7 |
Correct |
44 ms |
3280 KB |
Output is correct |
8 |
Correct |
44 ms |
3020 KB |
Output is correct |
9 |
Correct |
52 ms |
3504 KB |
Output is correct |
10 |
Correct |
59 ms |
3404 KB |
Output is correct |