/in/foo.cc: In function 'int main()':
/in/foo.cc:30:31: warning: 'Mp' may be used uninitialized in this function [-Wmaybe-uninitialized]
     int mm=1000000000,MM=0,mp,Mp;
                               ^~
/in/foo.cc:57:9: warning: 'mp' may be used uninitialized in this function [-Wmaybe-uninitialized]
         if(i-m==mp)
         ^~