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n = int(input())
output = []
count = 0
for i in range(1, n+1):
    if count >= 20:
        break
    inp = input()
    if ('TAK' in inp):
        if (count < 10):
            output.append(str(i))
            count += 1
        elif (count < 20) and (int(inp.split()[1]) < 2):
            output.append(str(i))
            count += 1
            
print(' '.join(output))