Pro.ID21139 TitleBeat the Spread! Title链接http://10.20.2.8/oj/exercise/problem?problem_id=21139 AC68 Submit174 Ratio39.08% 时间&空间限制描述Superbowl Sunday is nearly here. In order to pass the time waiting for the half-time commercials and wardrobe malfunctions, the local hackers have organized a betting pool on the game. Members place their bets on the sum of the two final scores, or on the absolute difference between the two scores. Given the winning numbers for each type of bet, can you deduce the final scores? 输入The first line of input contains n, the number of test cases. n lines follow, each representing a test case. Each test case gives s and d, non-negative integers representing the sum and (absolute) difference between the two final scores. 输出Description Superbowl Sunday is nearly here. In order to pass the time waiting for the half-time commercials and wardrobe malfunctions, the local hackers have organized a betting pool on the game. Members place their bets on the sum of the two final scores, or on the absolute difference between the two scores. Given the winning numbers for each type of bet, can you deduce the final scores? Input The first line of input contains n, the number of test cases. n lines follow, each representing a test case. Each test case gives s and d, non-negative integers representing the sum and (absolute) difference between the two final scores. Output For each test case, output a line giving the two final scores, largest first. If there are no such scores, output a line containing "impossible". Recall that football scores are always non-negative integers. Sample Input 2 Sample Output 30 10 Hint 请无视本题。 Source 样例输入2 样例输出30 10 提示请无视本题。 |
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