#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
using namespace std;
vector<pair<ll,ll>> v;
const ll N=1e5+2;
ll a[N];
int main() {
// ()
// your code goes here
ll n,i;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a[i];
v.push_back({a[i],i});
}
sort(v.begin(),v.end());
for(auto p:v)
cout<<p.fi<<" "<<p.se<<"\n";
return 0;
}
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