include <stdio.h>

include <stdlib.h>

int main() { int x1, y1, x2, y2; int distance; // 输入第一个点的坐标 scanf("%d", &x1); scanf("%d", &y1); // 输入第二个点的坐标 scanf("%d", &x2); scanf("%d", &y2); // 计算曼哈顿距离 distance = abs(x1 - x2) + abs(y1 - y2); // 输出曼哈顿距离 printf("%d\n", distance); return 0; }