#include <iostream>
#include <bits/stdc++.h>
using namespace std;
int main() {
int t;
cin>>t;
while (t--){
int a,b,c;
cin>>a>>b>>c;
if (a==0 && b==0){
for (int i=0; i<c+1; i++){
cout<<1;
}
cout<<"\n";
}
else{
if (b%2==0) cout<<1;
for (int i=0; i<a+1; i++){
cout<<0;
}
for (int i=0; i<(b-1)/2; i++){
cout<<10;
}
for (int i=0; i<c+1; i++){
cout<<1;
}
cout<<"\n";
}
}
}
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