prepare (1/3): 
finished

make (2/3): 
g++ -g -Wall -O2 -o main.o -c main.cpp 
In file included from main.cpp:3:0:
fib_heap.h: In instantiation of 'fib_heap<TYPE, COMP>::~fib_heap() [with TYPE = cell; COMP = compare_t]':
main.cpp:167:1:   required from here
fib_heap.h:88:8: warning: variable 'k' set but not used [-Wunused-but-set-variable]
   TYPE k=dequeue_min();
        ^
main.cpp: In function 'int main(int, char**)':
main.cpp:159:21: warning: 'pql' may be used uninitialized in this function [-Wmaybe-uninitialized]
    else pql->enqueue(up);
         ~~~~~~~~~~~~^~~~
g++ -g -Wall -O2 -o main main.o
finished

clean (3/3): 
finished

all task finished, build successfully