#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define st first
#define nd second
#define pii pair<int,int>
#define sp " "
#define nl "\n"
#define all(x) x.begin(),x.end()
#define fastio() ios_base::sync_with_stdio(0);cin.tie(0);
#define ll long long
#define int ll
using namespace std;
const int N = 100005;
const int INF = 1000000005;
int n,a[N],ans;
stack<int> stck;
int32_t main(){
fastio()
cin >> n;
for(int i=0;i<n;i++){
cin >> a[i];
}
stck.push(0);
for(int i=0;i<n;i++){
while(stck.top()>a[i]){
stck.pop();
}
if(stck.top()<a[i]){
ans++;
}
stck.push(a[i]);
}
cout << ans << nl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
5 ms |
748 KB |
Output is correct |
5 |
Correct |
7 ms |
1004 KB |
Output is correct |
6 |
Correct |
12 ms |
1516 KB |
Output is correct |
7 |
Correct |
12 ms |
1132 KB |
Output is correct |