for p in range(int(input())):
n,x=map(int,input().split())
a=list(map(int,input().split()))
i=1
while((x>0) or(i in a)):
if(i in a):
i+=1
continue
else:
i+=1
x-=1
print(i-1)#include <bits/stdc++.h>
using namespace std;
int main()
{
int t;
cin >> t;
while(t--)
{
int n, x, ans;
cin >> n >> x;
int arr[n];
for(int i = 0; i < n; i++)
{
cin >> arr[i];
}
bool check = true;
for(int i = 1; x >= 0; i++)
{
for(int j = 0; j < n; j++)
{
if(i == arr[j])
{
check = true;
break;
}
else
{
check = false;
}
}
if(check == false)
{
x--;
}
ans = i;
}
cout << ans - 1 << endl;
}
return 0;
}1343C - Alternating Subsequence | 1325A - EhAb AnD gCd |
746A - Compote | 318A - Even Odds |
550B - Preparing Olympiad | 939B - Hamster Farm |
732A - Buy a Shovel | 1220C - Substring Game in the Lesson |
452A - Eevee | 1647B - Madoka and the Elegant Gift |
1408A - Circle Coloring | 766B - Mahmoud and a Triangle |
1618C - Paint the Array | 469A - I Wanna Be the Guy |
1294A - Collecting Coins | 1227A - Math Problem |
349A - Cinema Line | 47A - Triangular numbers |
1516B - AGAGA XOOORRR | 1515A - Phoenix and Gold |
1515B - Phoenix and Puzzle | 155A - I_love_username |
49A - Sleuth | 1541A - Pretty Permutations |
1632C - Strange Test | 673A - Bear and Game |
276A - Lunch Rush | 1205A - Almost Equal |
1020B - Badge | 1353A - Most Unstable Array |