from collections import deque
 
if __name__ == "__main__":
    n = int(input())
    d = deque()
    for i in range(n):
        temp =  input().split()
        if len(temp)>1:
            getattr(d,temp[0])(temp[1])
        else:
            getattr(d,temp[0])()
    print(' '.join(d))