#include <bits/stdc++.h>
#define INF 990000000
//7
using namespace std;

vector<string> split(string str, char del) {
    int first = 0;
    int last = str.find_first_of(del);
 
    vector<string> result;
 
    while (first < str.size()) {
        string subStr(str, first, last - first);
 
        result.push_back(subStr);
 
        first = last + 1;
        last = str.find_first_of(del, first);
 
        if (last == string::npos) {
            last = str.size();
        }
    }
 
    return result;
}



int main() {
string s;
cin>>s;
int flag=0;
char del = ',';
for (const auto subStr : split(s, del)) {
        if(subStr.compare("AC")!=0)flag++;
    }

if(flag==0)
cout <<"Done!"<<endl;
else
cout <<"Failed..."<<endl;


}