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n = int(input())
dane = []
for i in range(1, n + 1):
    chce, wynik = input().split(" ")
    if chce == "NIE":
        continue

    dane.append((int(wynik), i))

# print(dane)
ans = []
for i in range(10):
    ans.append(dane[i][1])

for i in range(10, len(dane)):
    if len(ans) == 20:
        break

    if dane[i][0] < 2:
        ans.append(dane[i][1])
ans.sort()
print(*ans)