foo.cc: In function 'int main()':
foo.cc:24:28: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for(long long int i=0;i<v3.size();i++)
      |                           ~^~~~~~~~~~
foo.cc:7:21: warning: unused variable 'ssum' [-Wunused-variable]
    7 |     long long int n,ssum=0,mmax=0;cin>>n;
      |                     ^~~~

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