{"problem":{"name":"Garden","description":{"content":"There is a farm whose length and width are $A$ yard and $B$ yard, respectively. A farmer, John, made a vertical road and a horizontal road inside the farm from one border to another, as shown below: (","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc106_a"},"statements":[{"statement_type":"Markdown","content":"There is a farm whose length and width are $A$ yard and $B$ yard, respectively. A farmer, John, made a vertical road and a horizontal road inside the farm from one border to another, as shown below: (The gray part represents the roads.)\n![image](https://img.atcoder.jp/ghi/27d063746b460f1132b6a99aa535a562.png)\nWhat is the area of this yard excluding the roads? Find it.\n\n## Constraints\n\n*   $A$ is an integer between $2$ and $100$ (inclusive).\n*   $B$ is an integer between $2$ and $100$ (inclusive).\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$A$ $B$\n\n[samples]\n\n## Note\n\nIt can be proved that the positions of the roads do not affect the area.","is_translate":false,"language":"English"}],"meta":{"iden":"abc106_a","tags":[],"sample_group":[["2 2","1\n\nIn this case, the area is $1$ square yard."],["5 7","24\n\nIn this case, the area is $24$ square yards."]],"created_at":"2026-03-03 11:01:13"}}