#include<stdio.h>


#define tab_width 4     //自己常用设置为4，故此

int main()
{
    int c_in, full_num;    //输入，填充空格数, 光标当前位置
    unsigned int cur_pos;

    c_in = full_num = cur_pos = 0;

    while( (c_in=getchar()) != EOF )
    {
        ++cur_pos;
        if( c_in == '\t' )
        {
            //printf("当前光标所在列：%d\n", cur_pos);       //测试用
            full_num = tab_width - (cur_pos-1) % tab_width;

            while( full_num != 0 ){
                full_num--;
                printf("|");    //用空格，最终输出不明显，改用'|'
            }
        }
        else if( c_in == '\n' ){
            cur_pos = 0;    //换行重新计数
        }
        else{
            putchar( c_in );
        }
    }
    puts("");


    return 0;
}