foo.cc: In function 'int main()':
foo.cc:6:8: error: redeclaration of 'int n'
    6 |  int n,n,r;
      |        ^
foo.cc:6:6: note: 'int n' previously declared here
    6 |  int n,n,r;
      |      ^
foo.cc:7:7: error: 'm' was not declared in this scope
    7 |  cin>>m>>n;
      |       ^
foo.cc:17:9: error: expected ';' before 'int'
   17 |  cout<<n
      |         ^
      |         ;
   18 |  int m,n,k;
      |  ~~~     
foo.cc:20:2: error: 'k' was not declared in this scope
   20 |  k=m;
      |  ^
foo.cc:16:6: warning: unused variable 't' [-Wunused-variable]
   16 |  int t=x%y/n;
      |      ^

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