Task: Program Execution
Input (English): first: 87
second: 52
first: -67
second: 0
first: -43
second: 78
first: 4
second: -52
first: -13
second: -1
Output (English): first: -67
second: 0
first: -43
second: 78
first: -13
second: -1
first: 4
second: -52
first: 87
second: 52