This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
using namespace std;
int main(){
int n;
cin>>n;
multiset<int> s;
int a[n+1];
for(int k=1;k<=n;k++){
cin>>a[k];
}
s.insert(a[1]);
int das=1;
int ans=1;
for(int k=2;k<=n;k++){
if(a[k]>a[k-1]){
s.insert(a[k]);
}
else{
das=k;
break;
}
}
int l=das;
multiset<int>::iterator it;
vector<int> v;
int mx=0;
for(int k=das;k<=n;k++){
it=s.upper_bound(a[l]);
if(a[k]<mx){
l=k;
ans++;
mx=0;
for(int i:v)
s.insert(i);
v.clear();
continue;
}
if(it==s.end()){
mx=max(mx,a[k]);
v.push_back(a[k]);
continue;
}
int ind=*it;
if(ind<a[k]){
l=k;
ans++;
mx=0;
for(int i:v)
s.insert(i);
v.clear();
continue;
}
v.push_back(a[k]);
mx=max(mx,a[k]);
}
cout<<ans+1;
return 0;
}
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