pipes Batch , stdin/stdout

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Subtask	Score	#TC	Time	Memory	Scoring
1	5	4	1s	128MB	Minimum
2	10	6	1s	128MB	Minimum
3	5	4	1s	128MB	Minimum
4	5	4	1s	128MB	Minimum
5	5	3	1s	128MB	Minimum
6	10	4	1s	128MB	Minimum
7	10	9	1s	128MB	Minimum
8	10	9	1s	128MB	Minimum
9	10	9	1s	128MB	Minimum
10	10	9	1s	128MB	Minimum
11	10	9	1s	128MB	Minimum
12	10	9	1s	128MB	Minimum
13	0	2	1s	128MB	Minimum

g++-8 ans.cpp -o pipes -Wall -Wshadow -static -O2 -lm -m64 -s -w -std=gnu++17 -fmax-errors=512