Number Steps java

[백준/7326번] Number Steps (Tehran Site 2000)[Java]

문제 Starting from point (0,0) on a plane, we have written all non-negative integers 0,1,2,... as shown in the figure. For example, 1, 2, and 3 has been written at points (1,1), (2,0), and (3,1) respectively and this pattern has continued. You are to write a program that reads the coordinates of a point (x, y), and writes the number (if any) that has been written at that point. (x, y) coordinates ..