foo.cc: In function 'int main()':
foo.cc:6:13: error: 'i' was not declared in this scope
    6 |         for(i=1;i*i<=m;i++){
      |             ^
foo.cc:9:22: error: expected ';' before 'return'
    9 |         cout<<n<<endl
      |                      ^
      |                      ;
   10 | 
   11 | return 0;
      | ~~~~~~                

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