#include <stdio.h>
int main(void) {
// your code goes here
int a=1537,b,c,d,f,sum;
b=a/1000;
c=a%10;
f=(a-b*1000)/100;
d=(a-b*1000-f*100)/10;
sum=b+f+d+c;
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSB7CgkvLyB5b3VyIGNvZGUgZ29lcyBoZXJlCiAgICBpbnQgYT0xNTM3LGIsYyxkLGYsc3VtOwogICAgYj1hLzEwMDA7CiAgICBwcmludGYoIuWNg+S9jeaVsOaYryVkXG4iLGIpOwogICAgYz1hJTEwOwogICAgcHJpbnRmKCLkuKrkvY3mlbDmmK8lZFxuIixjKTsKICAgIGY9KGEtYioxMDAwKS8xMDA7CiAgICBwcmludGYoIueZvuS9jeaVsOaYryVkXG4iLGYpOwogICAgZD0oYS1iKjEwMDAtZioxMDApLzEwOwogICAgcHJpbnRmKCLljYHkvY3mlbDmmK8lZFxuIixkKTsKICAgIHN1bT1iK2YrZCtjOwogICAgcHJpbnRmKCJzdW09JWRcbiIsc3VtKTsKICAgCglyZXR1cm4gMDsKfQo=