smoky

Add solution and test-cases for problem 719

Add solution and test-cases for problem 911

Add solution and test-cases for problem 1568

Add solution and test-cases for problem 959

Add solution and test-cases for problem 885

Add solution and test-cases for problem 3070

Add solution and test-cases for problem 3016

Add solution and test-cases for problem 2053

Add solution and test-cases for problem 220

Add solution and test-cases for problem 282