/in/foo.cc: In function 'int ss(int, int)':
/in/foo.cc:18:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int print()':
/in/foo.cc:25:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:36:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j=0;j<p.size();j++)
                     ~^~~~~~~~~