View problem - Pipes (BOI13_pipes) :: oj.uz

Language	Compilation command
C11	/usr/bin/gcc -DEVAL -std=gnu11 -O2 -pipe -static -s -o pipes pipes.c -lm
C++20	/usr/bin/g++ -DEVAL -std=gnu++20 -O2 -pipe -static -s -o pipes pipes.cpp
C++17	/usr/bin/g++ -DEVAL -std=gnu++17 -O2 -pipe -static -s -o pipes pipes.cpp
Java	/usr/bin/javac -encoding UTF-8 pipes.java /bin/sh -c echo "Main-Class: pipes" > __manifest__.txt /bin/sh -c jar cfm pipes.jar __manifest__.txt *.class
Pypy 3	/usr/bin/pypy3 -m compileall -b pipes.py /bin/mv pipes.pyc __main__.pyc /usr/bin/zip pipes.pyz.zip __main__.pyc /bin/mv pipes.pyz.zip pipes.pyz

Time limit	Memory limit	# of submissions	# of submitted users	Solved #	Accepted user ratio
1000 ms	128 MiB	810	157	126	80.25%

We don't know the exact scoring rules, so your score may be different from the official contest.

Problem Source

Baltic Olympiad in Informatics 2013 Day 1 Problem 3