#include <bits/stdc++.h>
using namespace std;
int main(){
ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
string s; cin >> s;
long long i = 0,kq =0;
while (i < s.size()){
kq = kq * 10 + (s[i] - '0');
if (kq >= 97 && kq <= 122) {
cout << (char)kq;
kq = 0;
}
i++;
}
return 0;
}
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