{"problem":{"name":"Between a and b ...","description":{"content":"You are given nonnegative integers $a$ and $b$ ($a ≤ b$), and a positive integer $x$. Among the integers between $a$ and $b$, inclusive, how many are divisible by $x$?","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc048_b"},"statements":[{"statement_type":"Markdown","content":"You are given nonnegative integers $a$ and $b$ ($a ≤ b$), and a positive integer $x$. Among the integers between $a$ and $b$, inclusive, how many are divisible by $x$?\n\n## Constraints\n\n*   $0 ≤ a ≤ b ≤ 10^{18}$\n*   $1 ≤ x ≤ 10^{18}$\n\n## Input\n\nThe input is given from Standard Input in the following format:\n\n$a$ $b$ $x$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc048_b","tags":[],"sample_group":[["4 8 2","3\n\nThere are three integers between $4$ and $8$, inclusive, that are divisible by $2$: $4$, $6$ and $8$."],["0 5 1","6\n\nThere are six integers between $0$ and $5$, inclusive, that are divisible by $1$: $0$, $1$, $2$, $3$, $4$ and $5$."],["9 9 2","0\n\nThere are no integer between $9$ and $9$, inclusive, that is divisible by $2$."],["1 1000000000000000000 3","333333333333333333\n\nWatch out for integer overflows."]],"created_at":"2026-03-03 11:01:14"}}