1 files changed, 45 insertions, 0 deletions
diff --git a/challenge-218/ulrich-rieke/cpp/ch-1.cpp b/challenge-218/ulrich-rieke/cpp/ch-1.cpp
new file mode 100644
index 0000000000..de7fa6670f
--- /dev/null
+++ b/challenge-218/ulrich-rieke/cpp/ch-1.cpp
@@ -0,0 +1,45 @@
+#include <iostream>
+#include <string>
+#include <vector>
+#include <algorithm>
+#include <numeric>
+
+std::vector<std::string> split( const std::string & startline ,
+      const std::string & sep ) {
+  std::vector<std::string> separated ;
+  std::string::size_type start { 0 } ;
+  std::string::size_type pos ;
+  do {
+      pos = startline.find_first_of( sep , start ) ;
+      separated.push_back( startline.substr(start , pos - start )) ;
+      start = pos + 1 ;
+  } while ( pos != std::string::npos ) ;
+  return separated ;
+}
+
+int main( ) {
+  std::cout << "Enter at least 3 integers, separated by blanks!\n" ;
+  std::string line ;
+  std::getline( std::cin , line ) ;
+  std::vector<std::string> numberstrings( split( line , " " )) ;
+  std::vector<int> numbers ;
+  for ( auto s : numberstrings )
+      numbers.push_back( std::stoi( s ) ) ;
+  if ( numbers.size( ) == 3 ) {
+      std::cout << std::accumulate( numbers.begin( ) , numbers.end( ) , 1 ,
+        std::multiplies<int>( ) ) << '\n' ;
+  }
+  else {
+      int len = numbers.size( ) ;
+      std::vector<int> products ;
+      for ( int i = 0 ; i < len - 2 ; i++ ) {
+    for ( int j = i + 1 ; j < len - 1 ; j++ ) {
+        for ( int k = j + 1 ; k < len ; k++ ) {
+          products.push_back( numbers[ i ] * numbers[ j ] * numbers[ k ] ) ;
+        }
+    }
+      }
+      std::cout << *max_element( products.begin( ) , products.end( ) ) << '\n' ;
+  }
+  return 0 ;
+}