题解 | #用列表实现栈#
用列表实现栈
https://www.nowcoder.com/practice/38187b9f30e44fdaa496751b82b0adbf
import sys
for line in sys.stdin:
n1 = int(line.strip())
stack = [1,2,3,4,5]
stack.pop()
print(stack)
stack.pop()
print(stack)
stack.append(n1)
print(stack)
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