foo.cc:81:2: error: stray '#' in program
 }#include <iostream>
  ^
foo.cc: In function 'int main()':
foo.cc:73:15: warning: unused variable 'i' [-Wunused-variable]
  int n1,n2,n3,i;
               ^
foo.cc: At global scope:
foo.cc:81:3: error: 'include' does not name a type
 }#include <iostream>
   ^~~~~~~

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