import std;

void main () {
    int N = readln.chomp.to!int;
    string S = readln.chomp;
    writeln("UEC", S.split('c')[1]);
}

void read (T...) (string S, ref T args) {
    import std.conv : to;
    import std.array : split;
    auto buf = S.split;
    foreach (i, ref arg; args) {
        arg = buf[i].to!(typeof(arg));
    }
}