foo.cc: In function 'int main()':
foo.cc:9:17: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    9 |  for(int i=0;li<n;i++)
      |                 ^
foo.cc:37:3: error: 'result' was not declared in this scope; did you mean 'rsult'?
   37 |   result -= n*m - 1;
      |   ^~~~~~
      |   rsult

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