#include <bits/stdc++.h>
#define rep(i,n)for(long long i=0;i<(n);i++)
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
const ll INF=1e18;
const int MOD=1e9+7;
const double pi=acos(-1);

int main(){
  int a,b,c;
  cin >> a >> b >> c;
  if(a>b && b>c) cout << 'A' << " " << 'B' << " " << 'C' << endl;
  if(a>c && c>b) cout << 'A' << " " << 'C' << " " << 'B' << endl;
  if(b>a && a>c) cout << 'B' << " " << 'A' << " " << 'C' << endl;
  if(b>c && c>a) cout << 'B' << " " << 'C' << " " << 'A' << endl;
  if(c>b && b>a) cout << 'C' << " " << 'B' << " " << 'A' << endl;
  if(c>a && a>b) cout << 'C' << " " << 'A' << " " << 'B' << endl;
}