{"problem":{"name":"Plural Form","description":{"content":"In the Kingdom of AtCoder, people use a language called Taknese, which uses lowercase English letters. In Taknese, the plural form of a noun is spelled based on the following rules: *   If a noun's s","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc179_a"},"statements":[{"statement_type":"Markdown","content":"In the Kingdom of AtCoder, people use a language called Taknese, which uses lowercase English letters.\nIn Taknese, the plural form of a noun is spelled based on the following rules:\n\n*   If a noun's singular form does not end with `s`, append `s` to the end of the singular form.\n*   If a noun's singular form ends with `s`, append `es` to the end of the singular form.\n\nYou are given the singular form $S$ of a Taknese noun. Output its plural form.\n\n## Constraints\n\n*   $S$ is a string of length $1$ between $1000$, inclusive.\n*   $S$ contains only lowercase English letters.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$S$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc179_a","tags":[],"sample_group":[["apple","apples\n\n`apple` ends with `e`, so its plural form is `apples`."],["bus","buses\n\n`bus` ends with `s`, so its plural form is `buses`."],["box","boxs"]],"created_at":"2026-03-03 11:01:14"}}