using static System.Console;
public class Program {
public static void Main() {
var texto = "Abcc111de12234";
var lista = new char[texto.Length];
for (int i = 0, j = 0; i < texto.Length; i++) if (!char.IsDigit(texto[i]) || (i == 0 || texto[i] != texto[i - 1])) lista[j++] = texto[i];
WriteLine(new string(lista));
}
}
//https://pt.stackoverflow.com/q/291742/101
dXNpbmcgc3RhdGljIFN5c3RlbS5Db25zb2xlOwoKcHVibGljIGNsYXNzIFByb2dyYW0gewoJcHVibGljIHN0YXRpYyB2b2lkIE1haW4oKSB7CgkJdmFyIHRleHRvID0gIkFiY2MxMTFkZTEyMjM0IjsKCQl2YXIgbGlzdGEgPSBuZXcgY2hhclt0ZXh0by5MZW5ndGhdOwoJCWZvciAoaW50IGkgPSAwLCBqID0gMDsgaSA8IHRleHRvLkxlbmd0aDsgaSsrKSBpZiAoIWNoYXIuSXNEaWdpdCh0ZXh0b1tpXSkgfHwgKGkgPT0gMCB8fCB0ZXh0b1tpXSAhPSB0ZXh0b1tpIC0gMV0pKSBsaXN0YVtqKytdID0gdGV4dG9baV07CgkJV3JpdGVMaW5lKG5ldyBzdHJpbmcobGlzdGEpKTsKCX0KfQoKLy9odHRwczovL3B0LnN0YWNrb3ZlcmZsb3cuY29tL3EvMjkxNzQyLzEwMQ==