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import sys
buff = sys.stdin.readlines()
l = 0
fin = ""
for i, line in enumerate(buff[1:]):
    s, x = line.split()
    if s == "TAK":
        if l <= 10:
            l += 1
            fin += f"{i + 1} "
            continue
        if int(x) < 2:
            l += 1
            if l >= 20:
                fin += f"{i + 1}\n"
                break
            else:
                fin += f"{i + 1} "
sys.stdout.write(fin)