foo.cc: In function 'int main()':
foo.cc:29:46: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |                                 if ((q1 + 1) < a.size()) {
      |                                     ~~~~~~~~~^~~~~~~~~~
foo.cc:42:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |                         if ((k - 1) >= a.size()) printf("-1 ");
      |                             ~~~~~~~~^~~~~~~~~~~

Found 10 testcases.
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