/in/foo.cc: In function 'int main()':
/in/foo.cc:11:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(ll i=a;i<=b;++i)
                                 
/in/foo.cc:48:7:
   rep(j,0,temp.size()-1){
       ~~~~~~~~~~~~~~~~~         
/in/foo.cc:48:3: note: in expansion of macro 'rep'
   rep(j,0,temp.size()-1){
   ^~~
/in/foo.cc:11:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(ll i=a;i<=b;++i)
                                 
/in/foo.cc:49:8:
    rep(k,1,pw[i].size()-1){
        ~~~~~~~~~~~~~~~~~~       
/in/foo.cc:49:4: note: in expansion of macro 'rep'
    rep(k,1,pw[i].size()-1){
    ^~~
/in/foo.cc:61:10: warning: overflow in implicit constant conversion [-Woverflow]
  int ans=inf,yzs=0;
          ^~~