telephone

#include <iostream>

using namespace std;

int main()
{

    string telephoneNumber;
    getline(cin, telephoneNumber);

    for (int i = 0; i < telephoneNumber.size(); i++)
    {
        char character = telephoneNumber[i];
        if(character == 'A' || character == 'B' || character == 'C') telephoneNumber[i] = '2';
        else if(character == 'D' || character == 'E' || character == 'F') telephoneNumber[i] = '3';
        else if(character == 'G' || character == 'H' || character == 'I') telephoneNumber[i] = '4';
        else if(character == 'J' || character == 'K' || character == 'L') telephoneNumber[i] = '5';
        else if(character == 'M' || character == 'N' || character == 'O') telephoneNumber[i] = '6';
        else if(character == 'P' || character == 'Q' || character == 'R' || character == 'S') telephoneNumber[i] = '7';
        else if(character == 'T' || character == 'U' || character == 'V') telephoneNumber[i] = '8';
        else if(character == 'W' || character == 'X' || character == 'Y' || character == 'Z') telephoneNumber[i] = '9';
    }

    cout << telephoneNumber << endl;
}