/in/foo.cc: In function 'int main()':
/in/foo.cc:9:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<l.length();i++){
                ^
/in/foo.cc:15:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int j=0;j<strlen(s);j++){
                 ^
/in/foo.cc:27:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int j=0;j<strlen(s);j++){
                 ^
/in/foo.cc:37:8: warning: 'num1' may be used uninitialized in this function [-Wmaybe-uninitialized]
   else if(num1==q.front()-1){
        ^