smoky

Add solution and test-cases for problem 2134

Add solution and test-cases for problem 2678

Add solution and test-cases for problem 993

Add solution and test-cases for problem 1653

Add solution and test-cases for problem 2368

Add solution and test-cases for problem 2976

Add solution and test-cases for problem 1451

Add solution and test-cases for problem 2191

Add solution and test-cases for problem 1636

Add solution and test-cases for problem 541