#includemain(){int a,b,c,d,max,min;scanf("%d,%d,%d,%d",&a,&b,&c,&d);max = a;min = a;if(b>max) max = b;if(c>max) max = c;if(d>max) max = d;if(bif(cif(dprintf("max=%d,min=%d",max,min);}
