• Write your wrong solution in nok.cpp

• Write your correct solution in ok.cpp

• Write test generator in testgen.cpp

• Write your own checker in checker.cpp if it's many correct answers, or use default checker that compares answers from correct and wrong solution

Then compile stress.cpp:

g++ stress.cpp -o stress

Run stress and wait until the test is found:

./stress

Good luck with finding bugs! I wish you to open this folder less! :)