Enter your code here. Read input from STDIN. Print output to STDOUT

def can_stack_cubes(test_cases): results = [] for case in test_cases: n, blocks = case left, right = 0, n - 1 current_top = float('inf') can_stack = True

    while left <= right:
        if blocks[left] >= blocks[right]:
            chosen_block = blocks[left]
            left += 1
        else:
            chosen_block = blocks[right]
            right -= 1

        if chosen_block > current_top:
            can_stack = False
            break

        current_top = chosen_block

    results.append("Yes" if can_stack else "No")

return results

Read input

def main(): import sys input = sys.stdin.read data = input().strip().split("\n")

T = int(data[0])
test_cases = []

for i in range(1, 2 * T, 2):
    n = int(data[i])
    blocks = list(map(int, data[i + 1].split()))
    test_cases.append((n, blocks))

results = can_stack_cubes(test_cases)

for result in results:
    print(result)

if name == "main": main()