{"problem":{"name":"[蓝桥杯青少年组省赛 2024] 看书","description":{"content":"一本书共 $n$ 页，小明计划第一天看 $x$ 页，此后每一天都要比前一天多看 $y$ 页。请问小明几天可以看完这本书？ ","description_type":"Markdown"},"platform":"Luogu","limit":{"time_limit":1000,"memory_limit":524288},"difficulty":{"LuoguStyle":"P1"},"is_remote":true,"is_sync":true,"sync_url":null,"sign":"LGB4300"},"statements":[{"statement_type":"Markdown","content":"一本书共 $n$ 页，小明计划第一天看 $x$ 页，此后每一天都要比前一天多看 $y$ 页。请问小明几天可以看完这本书？\n\n## Input\n\n一行输入三个整数 $n$，$x$，$y$（$20 \\leq n \\leq 5000$，$1 < x, y \\leq 20$），分别表示书的总页数、计划第一天看的页数以及此后每天都要比前一天多看的页数，整数之间以一个空格隔开。\n\n## Output\n\n输出一个整数，表示小明几天可以看完这本书。\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"LGB4300","tags":["2024","循环结构","蓝桥杯青少年组"],"sample_group":[["100 10 5","5"]],"created_at":"2026-03-03 11:09:25"}}