{"problem":{"name":"Forbidden List","description":{"content":"Given are an integer $X$ and an integer sequence of length $N$: $p_1, \\ldots, p_N$. Among the integers not contained in the sequence $p_1, \\ldots, p_N$ (not necessarily positive), find the integer nea","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc170_c"},"statements":[{"statement_type":"Markdown","content":"Given are an integer $X$ and an integer sequence of length $N$: $p_1, \\ldots, p_N$.\nAmong the integers not contained in the sequence $p_1, \\ldots, p_N$ (not necessarily positive), find the integer nearest to $X$, that is, find the integer whose absolute difference with $X$ is the minimum. If there are multiple such integers, report the smallest such integer.\n\n## Constraints\n\n*   $1 \\leq X \\leq 100$\n*   $0 \\leq N \\leq 100$\n*   $1 \\leq p_i \\leq 100$\n*   $p_1, \\ldots, p_N$ are all distinct.\n*   All values in input are integers.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$X$ $N$\n$p_1$ $...$ $p_N$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc170_c","tags":[],"sample_group":[["6 5\n4 7 10 6 5","8\n\nAmong the integers not contained in the sequence $4, 7, 10, 6, 5$, the one nearest to $6$ is $8$."],["10 5\n4 7 10 6 5","9\n\nAmong the integers not contained in the sequence $4, 7, 10, 6, 5$, the ones nearest to $10$ are $9$ and $11$. We should print the smaller one, $9$."],["100 0","100\n\nWhen $N = 0$, the second line in the input will be empty. Also, as seen here, $X$ itself can be the answer."]],"created_at":"2026-03-03 11:01:14"}}