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n = int(input())
a = []
for i in range(n):
    a.append([i] + list(input().split()))
    a[i][2] = int(a[i][2])
b = []
for i in range(n):
    if a[i][1] == 'TAK':
        b.append(a[i])
c = []
for i in range(10):
    c.append(b[i][0] + 1)
for i in range(10, len(b)):
    if len(c) == 20:break
    if b[i][2] < 2:
        c.append(b[i][0] + 1)
print(' '.join([str(i) for i in c]))