#include <bits/stdc++.h>
using namespace std;
long long int arr[1000010];
int main(){
long long int n, m, q, i, a, v;
cin>>n>>m>>q;
if(m==1){
for(i=0; i<n; i++){
cin>>arr[i];
}
for(i=0; i<q; i++){
long long int b, a;
cin>>a>>b;
if(b==arr[a-1] || a==b){
cout<<"DA"<<endl;
}
else{
cout<<"NE"<<endl;
}
}
}
else{
return 0;
}
return 0;
}
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