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>
using namespace std;
typedef long long ll;
int main(){
ll n;cin>>n;
vector<ll>arr(n);
for(auto &i:arr)cin>>i;
ll x=1,y=1;
for(ll i=0;i<n;i++){
if(arr[i]!=i+1){
x=arr[i];
break;
}
}
for(ll i=0;i<n;i++){
if(arr[i]!=i+1){
y=arr[i];
}
}
cout<<x<<" "<<y<<endl;
}
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