t = int(input())
s = []
b = []
for i in range(t):
    n = int(input())
    for i in range(n):
        a = input()
        if a[:3] == 'pus':
            s.append(int(a[5:6]))
        elif a[:3] == 'pop':
            if len(s) > 0:
                del s[0]
            else:
                b.append('Empty')
        elif a[:3] == 'que':
            if len(s) > 0:
                b.append(s[0])
            else:
                b.append('Anguei!')
        elif a[:3] == 'siz':
            b.append(len(s))
s = []
for i in b:
    print(i)