View Compilation Error

0_0_37157685_19135.cpp: In function 'int main()':
0_0_37157685_19135.cpp:19:20: error: 'ou' was not declared in this scope
   printf("%d %d\n",ou,ji);
                    ^
0_0_37157685_19135.cpp:19:23: error: 'ji' was not declared in this scope
   printf("%d %d\n",ou,ji);
                       ^