{"problem":{"name":"[信息与未来 2014] 奇数及偶数和","description":{"content":"给出一个正整数 $n$，求出 $1,2,3,\\cdots,n$ 中全部的奇数和、偶数和。","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":"LGB4129"},"statements":[{"statement_type":"Markdown","content":"给出一个正整数 $n$，求出 $1,2,3,\\cdots,n$ 中全部的奇数和、偶数和。\n\n## Input\n\n一个整数，表示 $n$。\n\n## Output\n\n一行两个整数，表示奇数和及偶数和。\n\n[samples]\n\n## Note\n\n$1\\le n\\le 2\\times10^8$。","is_translate":false,"language":"English"}],"meta":{"iden":"LGB4129","tags":["数学","2014","江苏","信息与未来"],"sample_group":[["6","9 12"]],"created_at":"2026-03-03 11:09:25"}}