title: Sum Binomial Coefficients 1
signature: function sumBinomialCoefficients1($n) {
test_code: <?php
  
  
  // SOLUTION CODE 
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function validateSolution($actual, $expected){
      return serialize($actual) == serialize($expected);
  }
  
  function driver($n, $expected){
      try{
        if (validateSolution(PLACEHOLDER_FN_NAME($n), $expected)){
          return "PASSED";
        }
        return "FAILED";
      }
      catch (Exception $exception_obj) {
        return get_class($exception_obj);
      }
  }
  
  function main(){
      printf("TEST-0...%s\n",driver(
        48, 
        281474976710656));
      
      printf("TEST-1...%s\n",driver(
        42, 
        4398046511104));
      
      printf("TEST-2...%s\n",driver(
        15, 
        32768));
      
      printf("TEST-3...%s\n",driver(
        23, 
        8388608));
      
      printf("TEST-4...%s\n",driver(
        41, 
        2199023255552));
      
      printf("TEST-5...%s\n",driver(
        46, 
        70368744177664));
      
      printf("TEST-6...%s\n",driver(
        36, 
        68719476736));
      
      printf("TEST-7...%s\n",driver(
        53, 
        9007199254740992));
      
  }
  
  main();
  ?>
source_py: def sum_binomial_coefficients_1(n):
      return (1 << n)
source_cpp: int sum_binomial_coefficients_1(int n) {
    return ( 1 << n );
  }