prepare (1/3): 
finished

make (2/3): 
g++ -g -Wall -o main.o -c main.cpp
In file included from main.cpp:6:0:
unsorted_heap.h: In instantiation of 'const TYPE& unsorted_heap<TYPE, COMP>::get_min() const [with TYPE = point; COMP = point::comp]':
main.cpp:139:1:   required from here
unsorted_heap.h:101:10: warning: reference to local variable 'val' returned [-Wreturn-local-addr]
     TYPE val = temp;
          ^~~
g++ -g -Wall -o main main.o
finished

clean (3/3): 
finished

all task finished, build successfully