#include<bits/stdc++.h>
using namespace std;
#define int long long
#define in pair<int, int>
#define f first
#define s second
#define pb push_back
#define pob pop_back
#define INF (int)1e17
#define MX (int)3e5+5
#define fast() ios_base::sync_with_stdio(false); cin.tie(NULL)
set<in> cool;
signed main()
{
fast();
int n;
cin >> n;
for(int i = 1; i <= n; i++)
{
int x;
cin >> x;
cool.insert({-x, i});
}
int ans = 0;
while(cool.size())
{
ans++;
in fine = *cool.begin();
int curr = fine.f;
int index = fine.s;
cool.erase(cool.begin());
while(true)
{
if(cool.empty())
break;
auto it = cool.lower_bound({curr+1, index});
if(it == cool.end())
break;
if((*it).f == curr+1)
{
curr = (*it).f;
index = (*it).s;
cool.erase(it);
}
else
break;
}
}
cout << ans;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
340 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
1 ms |
592 KB |
Output is correct |
4 |
Correct |
2 ms |
596 KB |
Output is correct |
5 |
Correct |
887 ms |
53452 KB |
Output is correct |
6 |
Correct |
1072 ms |
59448 KB |
Output is correct |
7 |
Correct |
800 ms |
49020 KB |
Output is correct |
8 |
Correct |
780 ms |
48336 KB |
Output is correct |
9 |
Correct |
818 ms |
51240 KB |
Output is correct |
10 |
Correct |
876 ms |
53180 KB |
Output is correct |