#include <stdio.h>
main()
{
    char a[2000];
    int n;

    gets( a );/* 改行まで文字列の入力 */

    n = 0 ;
    while( a[n] !=0 ){
       n = n + 1;
    }

    printf("length of '%s' is %d\n", a, n);
}