#include<stdio.h>intmain(){
int max = 0;
int min = 0;
printf("两个奇数");
int a = 0, b = 0, c = 0, d = 0;
scanf("%d%d", &a, &b);
if (a > b)
max = a;
else
max = b;
printf("两个偶数");
scanf("%d%d", &c, &d);
if (c < d)
min = c;
else
min = d;
printf("%d",max-min);
return0;
}