day 10 part 1 solution

Author: baton

10/1.cpp

@@ -0,0 +1,62 @@
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <vector>
+
+
+int main( int argc, char * argv[] )
+{
+	if( argc < 2 )
+		return 0;
+
+	std::ifstream ifs( argv[ 1 ] );
+
+	uint64_t sum( 0 );
+
+	while( !ifs.eof() )
+	{
+		std::string s;
+		ifs >> s;
+
+		std::vector< char > v;
+		for( char const c : s )
+		{
+			bool broken( false );
+			switch( c )
+			{
+				case '(':
+					v.push_back( ')' ); break;
+				case '[':
+					v.push_back( ']' ); break;
+				case '{':
+					v.push_back( '}' ); break;
+				case '<':
+					v.push_back( '>' ); break;
+
+				default:
+					if( c != v.back() )
+						broken = true;
+					else
+						v.pop_back();
+					break;
+			}
+
+			if( broken )
+			{
+				switch( c )
+				{
+					case ')': sum += 3; break;
+					case ']': sum += 57; break;
+					case '}': sum += 1197; break;
+					case '>': sum += 25137; break;
+					default: break;
+				}
+				break;
+			}
+		}
+	}
+
+	std::cout << "result = " << sum << std::endl;
+
+	return 0;
+}