C. Sanatorium
链接：
http://codeforces.com/contest/732/problem/C
代码：
1 #include<iostream> 2 #include<algorithm> 3 using namespace std; 4 typedef long long ll; 5 int main() 6 { 7 ll a, b, c; 8 cin >> a >> b >> c; 9 ll m = max(a, max(b, c)); 10 ll ans = 0; 11 if (a < m) ans += m - 1 - a; 12 if (b < m) ans += m - 1 - b; 13 if (c < m) ans += m - 1 - c; 14 cout << ans << endl; 15 return 0; 16 }