4700: P8762 [蓝桥杯 2021 国 ABC] 123
Memory Limit:128 MB
Time Limit:1.000 S
Judge Style:Text Compare
Creator:
Submit:0
Solved:0
Description

Input

Output

Sample Input Copy
3
1 1
1 3
5 8
Sample Output Copy
1
4
8
HINT
