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#include <bits/stdc++.h>
#define pb push_back
using namespace std;

typedef long long ll;

ll b, d, s;

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> b >> d >> s;
    vector<ll> a;
    a.pb(b);
    a.pb(d);
    a.pb(s);
    sort(a.rbegin(), a.rend());  
    ll ans = 0;
    if(a[0]-a[1])
        ans += a[0]-a[1]-1;
    if(a[0]-a[2])
        ans += a[0]-a[2]-1;
    cout << ans; 
    return 0;
}
Success #stdin #stdout 0s 3468KB
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https://ideone.com/EgztAG
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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