02 最大值

#include<stdio.h>
int main()
{
    unsigned long long 
        int a, b, c;
    unsigned long long 
        int maxf,maxs;
    unsigned long long 
        int max;
    scanf("%llu %llu %llu", &a, &b, &c);
    maxf = (a + b + abs(a - b)) / 2;
    maxs = (a + c + abs(a - c)) / 2;
    max = (maxf + maxs + abs(maxf - maxs))/2;
    printf("%llu eh o maior", max);
    return 0;
}