{"trustable":false,"sections":[{"title":"","value":{"format":"HTML","content":"\u003cpre\u003e\n你有两个数组A,B长度均为n。矩阵C由A,B组成,组成规则为: Cij \u003d Ai * Bj。\n\n\n你的任务是求出矩阵C按顺序排列后第K大的数字。\n\u003c/pre\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cpre\u003e\n第一行:2个整数,N,K(2\u003c\u003dN\u003c\u003d50000,1\u003c\u003dK\u003c\u003d1e9)\n第2-N+1行,每行两个数字A[i],B[i](1\u003c\u003dA[i],B[i]\u003c\u003d1e9)\n\u003cpre\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cpre\u003e输出第k大的数\u003c/pre\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e\n3 2\n1 2\n2 3\n3 4\n\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003e9\u003c/pre\u003e"}}]}