set up the current system in a number of warehouse work, Stack simulation requires simulation of the current system of state stack. Input.txt documents presented by the input data. Line 1 is a positive integer n, n-stack operation. N the next trip, each trip is a stack operating instructions. Stack operating instructions "PUSH A B" is said to integer numbers of B to A stack; Stack operating instructions "A POP," said output No. A stack of documents imported elements example output file example inpu t.txt 1100 output.txt 7 PUSH PUSH PUSH 1200 2300 PUSH 2400 POP POP a POP 3 2 0200 4

新建文件夹 (6)
..............\input.txt
..............\output.txt
..............\sta.cpp
..............\sta.dsp
..............\sta.dsw
..............\sta.ncb
..............\sta.opt
..............\sta.plg

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