Submission #1757732

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Source Code Expand

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from collections import deque

def main():
    S = input()

    que = deque()
    for w in S.split():
        if w == "not":
            que.append(w)
        else:
            if len(que) >= 2 and que[-1] == "not" and que[-2] == "not":
                que.pop()
                que.pop()
            que.append(w)

    print(" ".join(que))

if __name__ == "__main__": main()

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