Task: Program Execution
Input (English): first: 10
second: 0
first: 71
second: 77
first: 63
second: 25
first: -31
second: 69
first: 55
second: -6
first: 37
second: -9
Output (English): first: -31
second: 69
first: 10
second: 0
first: 37
second: -9
first: 55
second: -6
first: 63
second: 25
first: 71
second: 77