题解 | #小乐乐计算函数#

#include <stdio.h>
int max(int a, int b, int c)
{
    return (a > b ? a : b) > c ? (a > b ? a : b):c;
}
int main()
{
    int a, b, c;
    double m;
    scanf("%d %d %d", &a, &b, &c);
    m = 1.0*max(a+b,b,c)/(max(a,b+c,c)+max(a,b,b+c));
    printf("%.2lf",m);
    return 0;
}