prepare (1/3): 
finished

make (2/3): 
g++ -g -Wall -O2 -o main.o -c main.cpp 
In file included from main.cpp:5:0:
binary_heap.h: In instantiation of 'void binary_heap<TYPE, COMP>::percolate_down(binary_heap<TYPE, COMP>::size_type) [with TYPE = cell; COMP = compare_t; binary_heap<TYPE, COMP>::size_type = unsigned int]':
binary_heap.h:107:8:   required from 'TYPE binary_heap<TYPE, COMP>::dequeue_min() [with TYPE = cell; COMP = compare_t]'
main.cpp:151:1:   required from here
binary_heap.h:75:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (minindex != index) {
       ~~~~~~~~~^~~~~~~~
main.cpp: In function 'int main(int, char**)':
main.cpp:82:13: warning: 'PQ' may be used uninitialized in this function [-Wmaybe-uninitialized]
  PQ->enqueue(map[s_y][s_x]);
  ~~~~~~~~~~~^~~~~~~~~~~~~~~
g++ -g -Wall -O2 -o main main.o
finished

clean (3/3): 
finished

all task finished, build successfully