#include <stdio.h>
#include <stdbool.h>

int main()
{
    char symbol;
    char preInput;
    int count = 0;
    int j = 0;

    int symbolsCount = 0;

    int codedSymbols = 0;

    while (scanf(" %c", &symbol) != EOF)
    {
        if (symbol < 'A' || symbol > 'Z')
        {
            if (count < 3)
            {
                for (int i = 0; i < count; i++)
                {
                    printf("%c", preInput);
                }
                printf("\n");
            }
            else if (count > 2 && count < 256)
            {
                printf("%c%d", preInput, count);
                printf("\n");
            }
            else
            {
                int series = count / 255;
                for (int i = 0; i < series; i++)
                {
                    printf("%c%d", preInput, 255);
                }

                int trash = count - (series * 255);

                if (trash < 3)
                {
                    for (int i = 0; i < trash; i++)
                    {
                        printf("%c", preInput);
                    }
                }
                else
                {
                    printf("%c%d", preInput, trash);
                }
                printf("\n");
            }
            fprintf(stderr, "Error: Neplatny symbol!\n");
            return 100;
        }

        if (j == 0)
        {
            preInput = symbol;
            j++;
            count++;
            symbolsCount++;
            continue;
        }

        if (preInput != symbol)
        {
            if (count < 3)
            {
                for (int i = 0; i < count; i++)
                {
                    printf("%c", preInput);
                    codedSymbols++;
                }
            }
            else if (count > 2 && count < 256)
            {
                printf("%c%d", preInput, count);
                if (count < 10)
                {
                    codedSymbols += 2;
                }
                else if (count > 9 && count < 100)
                {
                    codedSymbols += 3;
                }
                else
                {
                    codedSymbols += 4;
                }
            }
            else
            {
                int series = count / 255;
                for (int i = 0; i < series; i++)
                {
                    printf("%c%d", preInput, 255);
                    codedSymbols += 4;
                }
                int trash = count / 255;
                if (trash < 3)
                {
                    for (int i = 0; i < trash; i++)
                    {
                        printf("%c", preInput);
                        codedSymbols++;
                    }
                }
                else
                {
                    printf("%c%d", preInput, trash);
                    if (trash < 10)
                    {
                        codedSymbols += 2;
                    }
                    else if (trash > 9 && trash < 100)
                    {
                        codedSymbols += 3;
                    }
                    else
                    {
                        codedSymbols += 4;
                    }
                }
            }

            preInput = symbol;
            count = 1;
            symbolsCount++;
        }
        else
        {
            count++;
            symbolsCount++;
        }
    }

    if (count < 3)
    {
        for (int i = 0; i < count; i++)
        {
            printf("%c", symbol);
            codedSymbols++;
        }
    }
    else if (count > 2 && count < 256)
    {
        printf("%c%d", symbol, count);
        if (count < 10)
        {
            codedSymbols += 2;
        }
        else if (count > 9 && count < 100)
        {
            codedSymbols += 3;
        }
        else
        {
            codedSymbols += 4;
        }
    }
    else
    {
        int series = count / 255;
        for (int i = 0; i < series; i++)
        {
            printf("%c%d", symbol, 255);
            codedSymbols += 4;
        }

        int trash = count - (series * 255);

        if (trash < 3)
        {
            for (int i = 0; i < trash; i++)
            {
                printf("%c", symbol);
                codedSymbols++;
            }
        }
        else
        {
            printf("%c%d", symbol, trash);
            if (trash < 10)
            {
                codedSymbols += 2;
            }
            else if (trash > 9 && trash < 100)
            {
                codedSymbols += 3;
            }
            else
            {
                codedSymbols += 4;
            }
        }
    }

    printf("\n");

    double comprese = (double)codedSymbols / (double)symbolsCount;
    fprintf(stderr, "Pocet vstupnich symbolu: %d\n", symbolsCount);
    fprintf(stderr, "Pocet zakodovanych symbolu: %d\n", codedSymbols);
    fprintf(stderr, "Kompresni pomer: %.2f\n", comprese);

    return 0;
}