foo.cc: In function 'int cmp(std::vector<int>&)':
foo.cc:10:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
10 | for(int i=0;i<s.size();i++){
| ~^~~~~~~~~
foo.cc:14:22: 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=0;i<a.size();i++){
| ~^~~~~~~~~
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