SP10476 IOPC1206 - Fair bases

Consider integers N and K such that 2 As an example, suppose N=4 and K=3. Then the numbers in the list are 00,01,02 and 10. Let us find the score of i=00. The first digit of i appears as the first digit thrice (00,01,02) and the second digit of i appears as second digit twice (00,10). Thus the score of 00 is 3+2=5. An integer K (2 Given integers a and b (2

The first line of input contains T, the number of test cases (T

For each (a,b) pair in the input, output the sum of fairness factors of i in the range a