/in/foo.c: In function 'main':
/in/foo.c:8:10: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long int *' [-Wformat=]
  scanf("%d%d%d",&n,&t1,&t2);//5 4 3
          ^
/in/foo.c:23:2: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d",c); 
  ^~~~~~~~~~~~~~