ABC004_D.cpp

#include <bits/stdc++.h>

using namespace std;

#define int long long
#define all(v) begin(v), end(v)
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define reps(i, s, n) for(int i = (int)(s); i < (int)(n); i++)
#define min(...) min({__VA_ARGS__})
#define max(...) max({__VA_ARGS__})

template<class T1, class T2> void chmin(T1 &a, T2 b){if(a>b)a=b;}
template<class T1, class T2> void chmax(T1 &a, T2 b){if(a<b)a=b;}

using pint = pair<int, int>;
using tint = tuple<int, int, int>;
using vint = vector<int>;

const int inf = 1LL << 55;
const int mod = 1e9 + 7;

int R, G, B;

int leftend = -1000;
int rightend = 1000;
int offset = 1000;
int red = -100;
int green = 0;
int blue = 100;

int dp[2000][1000];

int solve(int idx, int rem) {
  if(rem == 0) return 0;
  if(rightend-idx < rem) return inf;
  if(idx >= rightend) return inf;
  int& ret = dp[idx+offset][rem];
  if(~ret) return ret;
  ret = inf;
  if(rem > G+B) ret = min(solve(idx+1, rem), solve(idx+1, rem-1) + abs(idx-red));
  else if(rem > B) ret = min(solve(idx+1, rem), solve(idx+1, rem-1) + abs(idx-green));
  else ret = min(solve(idx+1, rem), solve(idx+1, rem-1) + abs(idx-blue));
  return ret;
}

signed main()
{
  cin.tie(0);
  ios_base::sync_with_stdio(0);
  cout << fixed << setprecision(12);

  cin >> R >> G >> B;
  memset(dp, -1, sizeof(dp));
  cout << solve(-1000, R+G+B) << endl;

  return 0;
}