{"problem":{"name":"[语言月赛 202309] 等式判断","description":{"content":"给出三个整数 $a,b,c$，保证 $b \\neq 0$。 - 如果 $a + b = c$，请你输出 $\\texttt{plus}$。 - 如果 $a - b = c$，请你输出 $\\texttt{minus}$。 - 如果以上两条均不满足，请输出 $\\texttt{illegal}$。","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":"LGB3853"},"statements":[{"statement_type":"Markdown","content":"给出三个整数 $a,b,c$，保证 $b \\neq 0$。\n\n- 如果 $a + b = c$，请你输出 $\\texttt{plus}$。\n- 如果 $a - b = c$，请你输出 $\\texttt{minus}$。\n- 如果以上两条均不满足，请输出 $\\texttt{illegal}$。\n\n## Input\n\n输入只有一行三个整数，依次表示 $a,b,c$。\n\n## Output\n\n输出一行一个字符串表示答案。\n\n[samples]\n\n## Note\n\n### 数据规模与约定\n\n对全部的测试点，保证 $-2^{31} \\leq a,b,c < 2^{31}$，$b \\neq 0$。","is_translate":false,"language":"English"}],"meta":{"iden":"LGB3853","tags":["2023","O2优化","分支结构","语言月赛"],"sample_group":[["1 2 3","plus"],["3 2 1","minus"],["1 1 4","illegal"]],"created_at":"2026-03-03 11:09:25"}}