求问360修复方程为什么只过了9%

t = int(input())
equations = ["" for i in range(t)]
for i in range(t):
    equations[i] = input()
signals = set(('+', '*', '='))
for equation in equations:
    left, right = equation.split('=')
    left = eval(left)
    right = eval(right)
    if left == right:
        print("Yes")
        continue
    flag = False
    for i in range(10):
        if flag:
            break
        for j in range(len(equation) + 1):
            if i == 0 and (j == 0 or equation[j - 1] in signals):
                continue
            temp_equation = equation[:j] + str(i) + equation[j:]
            left, right = temp_equation.split('=')
            left = eval(left)
            right = eval(right)
            if left == right:
                print("Yes")
                flag = True
                break
    if not flag:
        print("No")