foo.cc: In function 'int main()':
foo.cc:8:7: error: 'rs' was not declared in this scope
  cin>>rs>>zs;
       ^~
foo.cc:8:7: note: suggested alternative: 'r'
  cin>>rs>>zs;
       ^~
       r
foo.cc:8:11: error: 'zs' was not declared in this scope
  cin>>rs>>zs;
           ^~
foo.cc:8:11: note: suggested alternative: 'zx'
  cin>>rs>>zs;
           ^~
           zx
foo.cc:34:4: error: 'noxi' was not declared in this scope
    noxi+=rs;
    ^~~~
foo.cc:34:4: note: suggested alternative: 'nowi'
    noxi+=rs;
    ^~~~
    nowi

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