how to do?

be careful of the largest case

Exercise 1.28 You are asked to write a C program to concatenate the binary formats of two given non-negative integers and output the result in decimal format. Input The input consists of the number of test cases, m, in the first line and followed by m test cases. Each test case consists of two non-negative integers in the range between 0 and 2161, both inclusively. An example is as follows, 31067520 Output The output should be m lines of integer values. Each line should be the decimal format of the corresponding concatenation result. 85 26 7