prepare (1/3): 
finished

make (2/3): 
g++ -g -Wall -O2 -o main.o -c main.cpp 
main.cpp: In function 'int main()':
main.cpp:45:9: warning: unused variable 'curtime' [-Wunused-variable]
     int curtime = 0;
         ^~~~~~~
main.cpp:145:9: warning: unused variable 'current' [-Wunused-variable]
     int current = v.second.ID;
         ^~~~~~~
g++ -g -Wall -O2 -o main main.o
finished

clean (3/3): 
finished

all task finished, build successfully