g++-10 -Wall -lm -static -DEVAL -o rect -O2 rect.cpp grader.cpp -std=c++14
g++-10 -Wall -lm -static -DEVAL -o rect -O2 rect.cpp grader.cpp -std=c++17
javac -J-Xms128m -J-Xmx512m -encoding UTF-8 rect.java grader.java