View Compilation Error

0_0_39251938_28655.cpp: In function 'int main()':
0_0_39251938_28655.cpp:34:58: error: 'sum1' was not declared in this scope; did you mean 'sum'?
   34 |         printf("The minimum number of moves is %d.\n\n", sum1);//此处输出需要两个换行
      |                                                          ^~~~
      |                                                          sum