Jakkara

input/code.cpp: In function 'int main(int, char**)':
input/code.cpp:13:45: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%ld %ld %ld %ld", &a, &b, &c, &d);
                                             ^

#include <stdio.h>

#define MAX(a,b) (((a) < (b)) ? (b) : (a))
#define ABS(a) ((a < 0) ? -(a): (a))
long a, b, c, d;
long f(int h) {
    return ABS(h-a) + ABS(h-b) + ABS(h-c) + ABS(h-d);
}

int main(int argc, char *argv[])
{
    long i, n, s;
    scanf("%ld %ld %ld %ld", &a, &b, &c, &d);
    n = MAX(MAX(a,b), MAX(c,d));

    i = 0;
    s = n / 2;
    while (s > 0) {
        while (i+s <= n && f(i+s/2) > f(i+s))
            i += s;
        s /= 2;
    }
    /* lol korjaan myöhemmi kunnol, ärsyttää... */
    while (i+1 <= n && f(i) > f(i+1)) i++;
    while (i > 0 && f(i) > f(i-1)) i--;
    printf("%ld\n", f(i));

    return 0;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED