#include <bits/stdc++.h>
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define dbg(x) cerr << #x << " = " << x << "\n"
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie()
using namespace std;
using ll = long long;
using ld = long double;
const int N = int(1e6) + 500;
int n, ans = 0;
int cnt[N];
int main() {
fast_io;
cin >> n;
for (int i = 0; i < n; ++i) {
int x;
cin >> x;
if (cnt[x] > 0) {
--cnt[x];
++cnt[x - 1];
continue;
}
++ans;
++cnt[x - 1];
}
cout << ans << "\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
256 KB |
Output is correct |
3 |
Correct |
1 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
68 ms |
4088 KB |
Output is correct |
6 |
Correct |
69 ms |
4088 KB |
Output is correct |
7 |
Correct |
52 ms |
3192 KB |
Output is correct |
8 |
Correct |
56 ms |
3192 KB |
Output is correct |
9 |
Correct |
80 ms |
3720 KB |
Output is correct |
10 |
Correct |
69 ms |
3448 KB |
Output is correct |