CSES – Collecting Numbers

#include<bits/stdc++.h>
#define int long long
#define pii pair<int,int>
#define f first
#define s second
#define fastio ios_base::sync_with_stdio(0);cin.tie(0)
using namespace std;
//declare
int n;
vector<pii> v;
set<int> st;
//
signed main(){
    fastio;
    cin>>n;
    for(int i=0;i<n;i++){
        int x; cin>>x;
        v.push_back({x,i});
    }
    sort(v.begin(),v.end());
    int idx = -1, cnt = 1;
    for(auto [_,i] : v){
        if(i < idx) cnt++;
        idx = i;
    }
    cout<<cnt<<"\n";
    return 0;
}