foo.cc: In function 'int main()':
foo.cc:19:19: warning: unused variable 'min' [-Wunused-variable]
         int xa,ya,min; cin>>xa>>ya;
                   ^~~
foo.cc:27:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<arr.size();i++){
                 ~^~~~~~~~~~~
foo.cc:17:9: warning: unused variable 'ans1' [-Wunused-variable]
     int ans1=0,ans2=0;
         ^~~~
foo.cc:17:16: warning: unused variable 'ans2' [-Wunused-variable]
     int ans1=0,ans2=0;
                ^~~~

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