View Compilation Error

1_645_1046_13061.cpp: In function 'int main()':
1_645_1046_13061.cpp:130:12: error: redeclaration of 'int i'
        int i=1;
            ^
1_645_1046_13061.cpp:90:11: note: 'int i' previously declared here
  for (int i=1;i<=cs;i++)
           ^