{"problem":{"name":"Train Ticket","description":{"content":"Sitting in a station waiting room, Joisino is gazing at her train ticket. The ticket is numbered with four digits $A$, $B$, $C$ and $D$ in this order, each between $0$ and $9$ (inclusive). In the form","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc079_c"},"statements":[{"statement_type":"Markdown","content":"Sitting in a station waiting room, Joisino is gazing at her train ticket.\nThe ticket is numbered with four digits $A$, $B$, $C$ and $D$ in this order, each between $0$ and $9$ (inclusive).\nIn the formula $A$ $op1$ $B$ $op2$ $C$ $op3$ $D$ $=$ $7$, replace each of the symbols $op1$, $op2$ and $op3$ with `+` or `-` so that the formula holds.\nThe given input guarantees that there is a solution. If there are multiple solutions, any of them will be accepted.\n\n## Constraints\n\n*   $0≤A,B,C,D≤9$\n*   All input values are integers.\n*   It is guaranteed that there is a solution.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$ABCD$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc079_c","tags":[],"sample_group":[["1222","1+2+2+2=7\n\nThis is the only valid solution."],["0290","0-2+9+0=7\n\n$0 - 2 + 9 - 0 = 7$ is also a valid solution."],["3242","3+2+4-2=7"]],"created_at":"2026-03-03 11:01:14"}}