题意 T ( 1 ≤ T ≤ 1 0 3 ) T(1 \leq T \leq 10^3) T(1≤T≤103) 组数据: 对于每组数据定义 f ( 0 ) = a ( 0 ≤ a ≤ 1 0 9 ) f(0) = a(0 \leq a \le 10^9) f(0)=a(0≤a≤109) f ( 1 ) = b ( 0 ≤ b ≤ 1 0 9 ) f(1) = b(0 \leq b\le 10^9) f(1)=b(0≤b≤109)