foo.cc: In function 'Matrix power(Matrix, LL)':
foo.cc:116:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  116 |     if (n % 2)
      |     ^~
foo.cc:118:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
  118 |         return F;
      |         ^~~~~~

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