View Compilation Error

0_0_33125207_27889.cpp: In function 'void Solve()':
0_0_33125207_27889.cpp:25:9: error: 'C' was not declared in this scope
  memset(C, 0, sizeof(C));
         ^
0_0_33125207_27889.cpp:31:3: error: 'Sum' was not declared in this scope
   Sum += right_less[i];
   ^
0_0_33125207_27889.cpp:41:18: error: 'Sum' was not declared in this scope
   Min = min(Min, Sum + ans);
                  ^