{"problem":{"name":"Discount Fare","description":{"content":"There is a train going from Station $A$ to Station $B$ that costs $X$ yen (the currency of Japan). Also, there is a bus going from Station $B$ to Station $C$ that costs $Y$ yen. Joisino got a special ","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc113_a"},"statements":[{"statement_type":"Markdown","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?\n\n## Constraints\n\n*   $1 \\leq X,Y \\leq 100$\n*   $Y$ is an even number.\n*   All values in input are integers.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$X$ $Y$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc113_a","tags":[],"sample_group":[["81 58","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 $C$."],["4 54","31"]],"created_at":"2026-03-03 11:01:14"}}