View Compilation Error

0_0_39794453_27184.cpp: In function 'int main()':
0_0_39794453_27184.cpp:45:21: error: 'sum' was not declared in this scope
   45 |                     sum+=work[j].penalty;
      |                     ^~~
0_0_39794453_27184.cpp:48:15: error: 'sum' was not declared in this scope
   48 |         cout<<sum<<endl;
      |               ^~~