1085
import sys sys.stdin = open(“input.txt”,”rt”) a,b,c,d = list(map(int, input().split())) kind_distance = (abs(a-c), abs(b-d),a,b) print(min(kind_distance))
import sys sys.stdin = open(“input.txt”,”rt”) a,b,c,d = list(map(int, input().split())) kind_distance = (abs(a-c), abs(b-d),a,b) print(min(kind_distance))