#include <bits/stdc++.h>
using namespace std;
#define sp << " " <<
#define int long long
#define vi vector<int>
#define pb push_back
#define F(xxx,yyy) for (int xxx=1;xxx<=yyy;xxx++)
#define pii pair<int,int>
#define all(x) x.begin()+1,x.end()
const int N = 4e5+1;
void solve() {
int n;
cin >> n;
vi a(n+1),mp(1000001,0);
F(i,n) cin >> a[i];
F(i,n) mp[a[i]]++;
for (int i=1000000-1;i>=1;i--) mp[i]+=mp[i+1];
int ans = 0;
for (int i=1;i<=1000000;i++) if (mp[i] >= i) ans = i;
cout << ans << endl;
}
signed main() {
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int t = 1;
//cin >> t;
while (t --> 0) solve();
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
8284 KB |
Output is correct |
2 |
Correct |
5 ms |
8284 KB |
Output is correct |
3 |
Correct |
4 ms |
8284 KB |
Output is correct |
4 |
Correct |
5 ms |
8284 KB |
Output is correct |
5 |
Correct |
4 ms |
8280 KB |
Output is correct |
6 |
Correct |
5 ms |
8440 KB |
Output is correct |
7 |
Correct |
5 ms |
8284 KB |
Output is correct |
8 |
Correct |
12 ms |
9672 KB |
Output is correct |
9 |
Correct |
39 ms |
15444 KB |
Output is correct |
10 |
Correct |
21 ms |
11864 KB |
Output is correct |