#include<stdio.h>
#include<math.h>

int main()
{
  int x,y;
  int d;
  double distance;
  scanf("%d %d",&x,&y);

  //原点から(x,y)の距離を計算
  distance = sqrt(x*x + y*y);

  printf("%d",(int)distance);
  return 0;
}