1987C - Basil's Garden - CodeForces Solution

def soln():
    n = int(input())
    ht = [int(x) for x in input().split()]
    res = ht[n-1]
    for i in range(n-2, -1, -1):
        res = max(res+1, ht[i])
    return res
    
def main():
    tc = int(input())
    for _ in range(tc):
        ans = soln()
                print(ans)

main()