Polynomials

Given n functions yi(x) = a0 + a1x + a2x2 + a3x3 and q queries. For each query, you are given an integer t and you are required to find out yi (i ≤ i ≤ n) that minimizes the value of yi(t). Input The first line is an integer T denotes the number of testcases. Each testcase starts with an integer n on a single line, the number of polynomials. The next n lines, each line describes a polynomial con