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#include <iostream>
#include <cstring>
#define cjdst_is_a_renji std
#define xiugaineicun memset
#define shuru cin
#define shuchu cout
#define sanshierzhengxing int
#define shiliuzhengxing short
#define bazhengxing char
#define fanhui return
#define ruguo if
#define chongfuxunhuan for
#define yizhixunhuandao while
#define qiudaxiao sizeof
#define ling 0
#define yi 1
#define yiqianlingwu 1005
#define shi 10
bazhengxing chao[yiqianlingwu], ji[yiqianlingwu];
sanshierzhengxing da[yiqianlingwu], shuai[yiqianlingwu], tong[yiqianlingwu], beiyongshuzu[yiqianlingwu];
sanshierzhengxing bijiaodaxiao(sanshierzhengxing *a, sanshierzhengxing *b){
	ruguo(a[ling] < b[ling]) fanhui -yi;
	ruguo(a[ling] > b[ling]) fanhui yi;
	chongfuxunhuan(sanshierzhengxing i = a[ling]; i >= yi; i--){
		ruguo(a[i] > b[i]) fanhui yi;
		ruguo(a[i] < b[i]) fanhui -yi;
	}fanhui ling;
}sanshierzhengxing youduiqihanshu(sanshierzhengxing *a, sanshierzhengxing *b, sanshierzhengxing dst){
	chongfuxunhuan(sanshierzhengxing i = yi; i <= a[ling]; i++){
		b[i + dst - yi] = a[i];
	}b[ling] = a[ling] + dst - yi;
}
sanshierzhengxing main(){
	cjdst_is_a_renji::shuru >> chao >> ji;
	da[ling] = strlen(chao), shuai[ling] = strlen(ji);
	chongfuxunhuan(sanshierzhengxing i = ling; i < da[ling]; i++) da[da[ling] - i] = chao[i] - '0';
	chongfuxunhuan(sanshierzhengxing i = ling; i < shuai[ling]; i++) shuai[shuai[ling] - i] = ji[i] - '0';
	ruguo(bijiaodaxiao(da, shuai) == -yi){
		cjdst_is_a_renji::shuchu << ling << cjdst_is_a_renji::endl << chao;
		fanhui ling;
	}
	tong[ling] = da[ling] - shuai[ling] + yi;
	chongfuxunhuan(sanshierzhengxing i = tong[ling]; i >= yi; i--){
		xiugaineicun(beiyongshuzu, ling, qiudaxiao(beiyongshuzu));
		youduiqihanshu(shuai, beiyongshuzu, i);
		yizhixunhuandao(bijiaodaxiao(da, beiyongshuzu) >= ling){
			tong[i]++;
			chongfuxunhuan(sanshierzhengxing j = yi; j <= da[ling]; j++){
				ruguo(da[j] < beiyongshuzu[j]){
					da[j + yi]--;
					da[j] += shi;
				}da[j] -= beiyongshuzu[j];
			}yizhixunhuandao(da[da[ling]] == ling && da[ling] > yi) da[ling]--;
		}
	}yizhixunhuandao(tong[ling] > yi && tong[tong[ling]] == ling) tong[ling]--;
	chongfuxunhuan(sanshierzhengxing i = tong[ling]; i > ling; i--) cjdst_is_a_renji::shuchu << tong[i];
	cjdst_is_a_renji::cout << cjdst_is_a_renji::endl;
	chongfuxunhuan(sanshierzhengxing i = da[ling]; i > ling; i--) cjdst_is_a_renji::shuchu << da[i];
	
	fanhui ling;
}