{"raw_statement":[{"iden":"statement","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 $\\texttt{illegal}$。"},{"iden":"input","content":"输入只有一行三个整数，依次表示 $a,b,c$。"},{"iden":"output","content":"输出一行一个字符串表示答案。"},{"iden":"note","content":"### 数据规模与约定\n\n对全部的测试点，保证 $-2^{31} \\leq a,b,c < 2^{31}$，$b \\neq 0$。"}],"translated_statement":null,"sample_group":[["1 2 3","plus"],["3 2 1","minus"],["1 1 4","illegal"]],"show_order":[],"formal_statement":null,"simple_statement":null,"has_page_source":false}