#include <stdio.h>
#include <stdlib.h>

char v[30];

int main()
{
    int i,j,n,mut;
    char c;
    c=fgetc(stdin);
    if(c=='-')
        mut++;
    i=0;
    n=0;
    mut=0;
    while(c!='\n')
    {
        v[i]=c;
        c=fgetc(stdin);
        if(c=='-')
            mut++;
        n++;
        i++;
    }
    i=0;
    while(v[i]!='O' &&  v[i]!='X')
        i++;
    if(v[i]=='O')
    {
        j=i;
        while(v[j]!='X')
            j++;
        while(v[i]!='-')
            i++;
        if(i<j)
        {
            v[i]='X';
            v[j]='-';
        }
        else
        {
            printf("a");
            printf("%d",mut);
            if(mut%2==0)
            {
                printf("a");
                i=1;
                while(v[i]!='O')
                    i++;
                if(v[i+1]=='X')
                {
                    while(v[i]=='O' && v[i]=='X')
                        i++;
                    while(v[i]!='O' && i<n)
                        i++;
                    if(v[i]!='O')
                    {
                        i=1;
                        while(v[i]!='O')
                            i++;
                        v[i]='-';
                        v[i-1]='O';
                    }
                    else
                    {
                        v[i]='-';
                        v[i-1]='O';
                    }
                }
            }
            else
            {
                //printf("a");
                i=2;
                while(v[i]!='O')
                    i++;
                if(v[i+1]=='X')
                {
                    while(v[i]=='O' && v[i]=='X')
                        i++;
                    while(v[i]!='O' && i<n)
                        i++;
                    if(v[i]!='O')
                    {
                        i=2;
                        while(v[i]!='O')
                            i++;
                        v[i]='-';
                        v[i-2]='O';
                    }
                    else
                    {
                        v[i]='-';
                        v[i-2]='O';
                    }
                }

            }
        }

    }
    else
    {
        v[i]='-';
    }
    for(i=0;i<n;i++)
        fputc(v[i], stdout);
    fprintf(stdout, "\n");

}