View Compilation Error

0_0_16379312_10089.cpp: In function 'int main()':
0_0_16379312_10089.cpp:17:14: error: 'clud' was not declared in this scope
   int ans=-1;clud
              ^
0_0_16379312_10089.cpp:18:17: error: 'i' was not declared in this scope
    for (int i=n;i>=1;i--)
                 ^