{"problem":{"name":"3y3s Challenge","description":{"content":"There are $N$ persons, conveniently numbered $1$ through $N$. They will take _3y3s Challenge_ for $N-1$ seconds. During the challenge, each person must look at each of the $N-1$ other persons for $1$ ","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"relay_i"},"statements":[{"statement_type":"Markdown","content":"There are $N$ persons, conveniently numbered $1$ through $N$. They will take _3y3s Challenge_ for $N-1$ seconds.\nDuring the challenge, each person must look at each of the $N-1$ other persons for $1$ seconds, in some order.\nIf any two persons look at each other during the challenge, the challenge ends in failure.\nFind the order in which each person looks at each of the $N-1$ other persons, to be successful in the challenge.\n\n## Constraints\n\n*   $2 \\leq N \\leq 100$\n\n## Input\n\nThe input is given from Standard Input in the following format:\n\n$N$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"relay_i","tags":[],"sample_group":[["7","2 3 4 5 6 7\n5 3 1 6 4 7\n2 7 4 1 5 6\n2 1 7 5 3 6\n1 4 3 7 6 2\n2 5 7 3 4 1\n2 6 1 4 5 3"],["2","\\-1"]],"created_at":"2026-03-03 11:01:13"}}