View problem - Palindromes (APIO14_palindrome) :: oj.uz

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

Time limit	Memory limit	# of submissions	# of submitted users	Solved #	Accepted user ratio
1000 ms	128 MiB	2491	415	277	66.75%

For this judge, DO NOT use palindrome.in / palindrome.out as input/output files -- use stdin and stdout instead.

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Problem Source

APIO 2014 Problem 1