Task: Program Execution
Input (English): first: 18
second: -12
first: 31
second: -49
first: 16
second: -21
first: -29
second: 42
first: 39
second: -4
first: -36
second: -28
first: 89
second: 45
Output (English): first: -36
second: -28
first: -29
second: 42
first: 16
second: -21
first: 18
second: -12
first: 31
second: -49
first: 39
second: -4
first: 89
second: 45