Task: Program Execution
Input (English): first: 53
second: 88
first: -31
second: -18
first: 36
second: 97
first: 86
second: 29
first: -13
second: -56
first: -48
second: 47
first: -66
second: 68
Output (English): first: -66
second: 68
first: -48
second: 47
first: -31
second: -18
first: -13
second: -56
first: 36
second: 97
first: 53
second: 88
first: 86
second: 29