#include<stdio.h>
const n=6;
int a[n]={0,20,30,40,50,60};
int b[n]={5,16,27,37,43,55};
main()
{int i=0,j=0,min=b[0]-a[0];
 while(i<n-1)
  {while(a[i]<=b[j]&& b[j]<=a[i+1])
   {if(b[j]-a[i]<min) min=b[j]-a[i];
    if(a[i+1]-b[j]<min) min=a[i+1]-b[j];
    j++;
   };
   i++;
  };  
 printf("min=%d",min);
}