foo.cc: In function 'Polynome operator+(Polynome, Polynome)':
foo.cc:138:21: warning: unused variable 'i' [-Wunused-variable]
  138 |                 int i, j, nTag = 0;
      |                     ^
foo.cc:138:24: warning: unused variable 'j' [-Wunused-variable]
  138 |                 int i, j, nTag = 0;
      |                        ^
foo.cc:138:27: warning: unused variable 'nTag' [-Wunused-variable]
  138 |                 int i, j, nTag = 0;
      |                           ^~~~

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