foo.cc: In function 'int main()':
foo.cc:15:67: error: 'total' was not declared in this scope; did you mean 'tot'?
   15 |    for (int j=1; j<=n; j++) if (x[j]<=x[i] && y[j]<=y[i] && i!=j) total++;
      |                                                                   ^~~~~
      |                                                                   tot

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