title: Find Sum Even Index Binomial Coefficients 1
signature: long long findSumEvenIndexBinomialCoefficients1(int n) {
test_code: #include <algorithm>
  #include <assert.h>
  #include <cstdlib>
  #include <iostream>
  #include <map>
  #include <set>
  #include <string>
  #include <tuple> 
  #include <unordered_map>
  #include <vector>
  #include <math.h>
  #include <cmath>
  #include <bits/stdc++.h>
  #include <numeric>
  #include <functional>
  
  using namespace std;
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  bool validateSolution(long long actual, long long expected){
      return actual == expected;
  }
  
  string driver(int n, long long expected){
      try
      {
          if (validateSolution(PLACEHOLDER_FN_NAME(n), expected)){
              return "PASSED";
          }
          return "FAILED";
      }
      catch (const std::overflow_error& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (const std::runtime_error& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (const std::exception& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (...)
      {
          return "UNK_ERROR";
      }
  }
  
  int main() {
      string result = "";
  
      result = driver(56, 36028797018963968); 
      cout << "TEST-" << 0 << "..."
           <<  result
           << "\n";
  
      result = driver(28, 134217728); 
      cout << "TEST-" << 1 << "..."
           <<  result
           << "\n";
  
      result = driver(4, 8); 
      cout << "TEST-" << 2 << "..."
           <<  result
           << "\n";
  
      result = driver(24, 8388608); 
      cout << "TEST-" << 3 << "..."
           <<  result
           << "\n";
  
      result = driver(30, 536870912); 
      cout << "TEST-" << 4 << "..."
           <<  result
           << "\n";
  
      result = driver(48, 140737488355328); 
      cout << "TEST-" << 5 << "..."
           <<  result
           << "\n";
  
      result = driver(32, 2147483648); 
      cout << "TEST-" << 6 << "..."
           <<  result
           << "\n";
  
      result = driver(13, 4096); 
      cout << "TEST-" << 7 << "..."
           <<  result
           << "\n";
  
      result = driver(19, 262144); 
      cout << "TEST-" << 8 << "..."
           <<  result
           << "\n";
  
      return 0;
  }
source_py: def find_sum_even_index_binomial_coefficients_1(n):
      return (1 << (n - 1))
source_cpp: int find_sum_even_index_binomial_coefficients_1(int n) {
    return ( 1 << ( n - 1 ) );
  }