foo.cc: In function 'int main()':
foo.cc:9:26: error: 'N' was not declared in this scope
    9 |         for(int i=2; i*i<N; i++)
      |                          ^
foo.cc:10:22: error: 'j' was not declared in this scope
   10 |                 if(p[j]==1)
      |                      ^
foo.cc:18:24: error: 'N' was not declared in this scope
   18 |         for(int i=2; i<N; i++)
      |                        ^

Found 10 testcases.
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