prepare (1/3): 
finished

make (2/3): 
gcc -g -Wall -O2 -o main.o -c main.c 
main.c: In function 'main':
main.c:71:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &eSize);
     ^~~~~~~~~~~~~~~~~~~
main.c:72:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &vSize);
     ^~~~~~~~~~~~~~~~~~~
main.c:89:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &V1);
         ^~~~~~~~~~~~~~~~
main.c:90:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &V2);
         ^~~~~~~~~~~~~~~~
main.c:91:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &w);
         ^~~~~~~~~~~~~~~
gcc -g -Wall -O2 -o main main.o
finished

clean (3/3): 
finished

all task finished, build successfully