foo.cc: In function 'int Getbig(std::vector<int>&, int&, int&)':
foo.cc:6:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |         for(int i=1;i<v.size() ;i++)
      |                     ~^~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:27:13: warning: unused variable 'k' [-Wunused-variable]
   27 |         int k=Getbig(v,si,ei);
      |             ^

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