Runtime Error
/in/foo.cc: In function 'int main()':
/in/foo.cc:85:17: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
cout<<dp(root,m);
^
/in/foo.cc: In function 'int main()':
/in/foo.cc:85:17: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
cout<<dp(root,m);
^
