foo.cc: In function 'int composeNum(int, int, int)':
foo.cc:14:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |                 for(int i=len;i<temp.size();i++){
      |                               ~^~~~~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:32:23: warning: variable 'dif2' set but not used [-Wunused-but-set-variable]
   32 |         int t,n,a,dif,dif2;
      |                       ^~~~

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