#include<stdio.h>
int main()
{int max,a=18,b=-43,c=34;
/*printf("please input a,b,c: \n");
scanf("%d,%d,%d",&a,&b,&c);*/
     max=a;
if(max<b)
     max=b;
if(max<c)
     max=c;
printf("the largest number is %d\n",max);
return 0;
}