Task: Program Execution
Input (English): first: 31
second: 77
first: 60
second: 54
first: 0
second: -87
first: 51
second: -82
first: -3
second: -2
first: -18
second: -56
first: -19
second: -61
Output (English): first: -19
second: -61
first: -18
second: -56
first: -3
second: -2
first: 0
second: -87
first: 31
second: 77
first: 51
second: -82
first: 60
second: 54