foo.cc: In function 'std::vector<int> mult(std::vector<int>&, int)':
foo.cc:12:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |  for(int i = 0; i < A.size() || t; i++){
      |                 ~~^~~~~~~~~~
foo.cc:13:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |   if(i < A.size()) t += A[i] * B;
      |      ~~^~~~~~~~~~

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