View Compilation Error

0_0_32161204_28119.cpp: In function 'void join(int, int)':
0_0_32161204_28119.cpp:23:9: error: declaration of 'int x' shadows a parameter
     int x = Find(x), y = Find(y);
         ^
0_0_32161204_28119.cpp:23:22: error: declaration of 'int y' shadows a parameter
     int x = Find(x), y = Find(y);
                      ^