prepare (1/3): 
finished

make (2/3): 
g++ -g -Wall -O2 -o main.o -c main.cpp 
main.cpp: In function 'int main(int, char**)':
main.cpp:121:31: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
      if(vec_temp_2->timestamp2=-1){
         ~~~~~~~~~~~~~~~~~~~~~~^~~
main.cpp:190:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(size!=med.size()){
           ~~~~^~~~~~~~~~~~
main.cpp:79:98: warning: unused variable 'test' [-Wunused-variable]
  int sell_key=0,buy_key=0,time=0,trade=0,shares=0,money=0,commission=0,current_timestamp,count=0,test;
                                                                                                  ^~~~
main.cpp:88:6: warning: variable 'time_out' set but not used [-Wunused-but-set-variable]
  int time_out;
      ^~~~~~~~
g++ -g -Wall -O2 -o main main.o
finished

clean (3/3): 
finished

all task finished, build successfully