↵
using namespace std;↵
↵
int main()↵
{↵
int t;↵
cin >> t;↵
for (int l = 0; l < t; l++)↵
{↵
int n, k = 0;↵
cin >> n;↵
int a[n + 1];↵
for (int i = 0; i < n; i++)↵
{↵
cin >> a[i];↵
}↵
for (int i = 0; i < n; i++)↵
{↵
if (a[i] > a[i + 1])↵
{↵
k = max(k, a[i]);↵
}↵
}↵
cout << k << endl;↵
}↵
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