{"raw_statement":[{"iden":"problem statement","content":"AtCoder currently holds four series of regular contests: `ABC`, `ARC`, `AGC`, and `AHC`.\nWhat is the series of regular contests currently held by AtCoder in addition to $S_1$, $S_2$, and $S_3$?"},{"iden":"constraints","content":"*   Each of $S_1$, $S_2$, and $S_3$ is `ABC`, `ARC`, `AGC`, or `AHC`.\n*   $S_1$, $S_2$, and $S_3$ are pairwise different."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$S_1$\n$S_2$\n$S_3$"},{"iden":"sample input 1","content":"ARC\nAGC\nAHC"},{"iden":"sample output 1","content":"ABC\n\nGiven in input are `ARC`, `AGC`, and `AHC`. The rest is `ABC`."},{"iden":"sample input 2","content":"AGC\nABC\nARC"},{"iden":"sample output 2","content":"AHC"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}