/*
 * Solution Template for A Mindbending Scenario
 * 
 * This file is provided to assist with reading of input and writing of output
 * for the problem. You may modify this file however you wish, or
 * you may choose not to use this file at all.
 */

#include <stdio.h>

int r1_x1;
int r1_y1;
int r1_x2;
int r1_y2;
int r2_x1;
int r2_y1;
int r2_x2;
int r2_y2;
int answer;
int main(void) {

    /* Read the input. */
    scanf("%d%d%d%d", &r1_x1, &r1_y1, &r1_x2, &r1_y2);
    scanf("%d%d%d%d", &r2_x1, &r2_y1, &r2_x2, &r2_y2);

    /*
     * TODO: This is where you should compute the answer and store it into the
     * variable answer.
     */

    /* Write the answer. */
    printf("%d\n", answer);

    return 0;
}