{"raw_statement":[{"iden":"problem statement","content":"There is a train going from Station $A$ to Station $B$ that costs $X$ yen (the currency of Japan).\nAlso, there is a bus going from Station $B$ to Station $C$ that costs $Y$ yen.\nJoisino got a special ticket. With this ticket, she can take the bus for half the fare if she travels from Station $A$ to Station $B$ by train and then travels from Station $B$ to Station $C$ by bus.\nHow much does it cost to travel from Station $A$ to Station $C$ if she uses this ticket?"},{"iden":"constraints","content":"*   $1 \\leq X,Y \\leq 100$\n*   $Y$ is an even number.\n*   All values in input are integers."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$X$ $Y$"},{"iden":"sample input 1","content":"81 58"},{"iden":"sample output 1","content":"110\n\n*   The train fare is $81$ yen.\n*   The train fare is $58$ ⁄ $2=29$ yen with the $50$% discount.\n\nThus, it costs $110$ yen to travel from Station $A$ to Station $C$."},{"iden":"sample input 2","content":"4 54"},{"iden":"sample output 2","content":"31"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}