View Compilation Error

0_0_39475355_30771.cpp: In function 'int main()':
0_0_39475355_30771.cpp:144:4: error: redeclaration of 'll sum'
  144 | ll sum = 0;
      |    ^~~
0_0_39475355_30771.cpp:127:12: note: 'll sum' previously declared here
  127 |         ll sum = 0;
      |            ^~~