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1265 B.cpp
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/**
* Git >> Mohsin_Riad
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**/
#include<bits/stdc++.h>
using namespace std;
#define IOS ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define mx 1000
#define endl "\n"
#define pb push_back
#define pob pop_back
#define max(x, y) (((x) > (y)) ? (x) : (y))
#define min(x, y) (((x) < (y)) ? (x) : (y))
typedef long long ll;
typedef double dd;
const int N = 2e5+5;
pair< ll, ll > pr[N];
int main()
{
IOS
//freopen("input.txt", "r", stdin);
ll t, n;
cin>>t;
while(t--)
{
cin>>n;
for(int i=0; i<n ;i++)
{
cin>> pr[i].first;
pr[i].second = i;
}
sort(pr, pr+n);
int a = pr[0].second;
int b = a;
cout<<"1";
for(int i=1; i<n ;i++)
{
a = min(a, pr[i].second);
b = max(b, pr[i].second);
if(b-a == i) cout<<"1";
else cout<<"0";
}
cout<<endl;
}
return (0);
}