Task: Program Execution
Input (English): first: 72
second: 71
first: 76
second: -21
first: -43
second: -26
first: 30
second: 100
first: 50
second: -100
Output (English): first: -43
second: -26
first: 30
second: 100
first: 50
second: -100
first: 72
second: 71
first: 76
second: -21