http://codeforces.com/problemset/problem/723/A
取中间那个数就可以了，答案为最大值减最小值。
#include<iostream> #include<cstring> #include<cstdio> #include<algorithm> #include<cmath> #define INF 0x3f3f3f3f using namespace std; int main() { int a,b,c; scanf("%d%d%d",&a,&b,&c); int x = min(a,b); x = min(x,c); int z = max(a,b); z = max(z,c); printf("%d\n",z-x); }
原文：http://www.cnblogs.com/zhurb/p/5929920.html