{"problem":{"name":"Unlucky 7","description":{"content":"Takahashi hates the number $7$. We are interested in integers without the digit $7$ in both decimal and octal. How many such integers are there between $1$ and $N$ (inclusive)?","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc186_c"},"statements":[{"statement_type":"Markdown","content":"Takahashi hates the number $7$.\nWe are interested in integers without the digit $7$ in both decimal and octal. How many such integers are there between $1$ and $N$ (inclusive)?\n\n## Constraints\n\n*   $1 \\leq N \\leq 10^5$\n*   $N$ is an integer.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$N$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc186_c","tags":[],"sample_group":[["20","17\n\nAmong the integers between $1$ and $20$, $7$ and $17$ contain the digit $7$ in decimal. Additionally, $7$ and $15$ contain the digit $7$ in octal.\nThus, the $17$ integers other than $7$, $15$, and $17$ meet the requirement."],["100000","30555"]],"created_at":"2026-03-03 11:01:14"}}