#include <bits/stdc++.h>
#define N 1000050
using namespace std;
int bit[N], v[N], n, ans;
void upd(int x, int v)
{
x += 2;
for(int i = x; i < N; i += (i&-i)) bit[i] += v;
}
int query(int x)
{
x += 2;
int sum = 0;
for(int i = x; i > 0; i -= (i&-i)) sum += bit[i];
return sum;
}
int main()
{
ios::sync_with_stdio(false); cin.tie(0);
cin>>n;
for(int i = 1; i <= n; i++) cin>>v[i];
for(int i = 1; i <= n; i++)
{
int st = i, ant = v[i], entrou = false;
ans ++;
while(i <= n and v[i] >= ant)
{
if(query(v[i]) - query(v[st] - 1)) break;
entrou = true;
ant = v[i];
i ++;
}
if(!entrou) i ++;
for(int j = st; j < i; j++) upd(v[j], 1);
i --;
}
cout<<ans<<"\n";
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
488 KB |
Output is correct |
3 |
Correct |
2 ms |
488 KB |
Output is correct |
4 |
Incorrect |
2 ms |
488 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
488 KB |
Output is correct |
3 |
Correct |
2 ms |
488 KB |
Output is correct |
4 |
Incorrect |
2 ms |
488 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
488 KB |
Output is correct |
3 |
Correct |
2 ms |
488 KB |
Output is correct |
4 |
Incorrect |
2 ms |
488 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
488 KB |
Output is correct |
3 |
Correct |
2 ms |
488 KB |
Output is correct |
4 |
Incorrect |
2 ms |
488 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |