Task("LinqObj87");
            var A = File.ReadAllLines(GetString(), Encoding.Default);
            var D = File.ReadAllLines(GetString(), Encoding.Default);
            var E = File.ReadAllLines(GetString(), Encoding.Default);

            var AA = A.Select(e =>
            {
                var s = e.Split(' ');
                return new
                {
                    year_b = s[0],
                    street = s[1],
                    code_potr = s[2]
                };
            }).OrderBy(x=>x.street);

            var DD = D.Select(e =>
            {
                var s = e.Split(' ');
                return new
                {
                    art_good = s[0],
                    shop = s[1],
                    price_good = int.Parse(s[2])
                };
            });

            var EE = E.Select(e =>
            {
                var s = e.Split(' ');
                return new
                {
                    shop = s[0],
                    code_potr = s[1],
                    art_good = s[2]
                };
            });

           var res= AA.Join(EE.GroupJoin(DD,q=>q.shop+q.art_good,w=>w.shop+w.art_good,(q,ww)=>new
           {
               code_potr=q.code_potr,
               shop=q.shop,
               s=ww.Select(x=>x.price_good).Sum()
           }), x => x.code_potr, y => y.code_potr,(x,y)=>$"{x.street} {y.shop} {y.s}").Distinct();

            var rr = AA.Join(EE, x => x.code_potr, y => y.code_potr, (x, y) => new
            {
                str=x.street,
                sh=y.shop,
                art=y.art_good
            });

            var pp = rr.GroupJoin(DD, q => q.sh + q.art, w => w.shop + w.art_good, (q, ww) => new
            {
                street=q.str,
                shop=q.sh,
                s=ww.Where(x=>x.shop==q.sh && x.art_good==q.art).Select(x=>x.price_good).Sum()
            }).Distinct();

            var kk = pp.GroupBy(x => x.street +" "+x.shop, (key, value) => new
            {
                var s = key.Split(' '),
                street=s[0],

                //street =key,
                sum=value.Where(x=>x.street+x.shop==key).Select(g=>g.s).Sum(),

                streetr=value.Where(x => x.street + " " + x.shop == key).Select(g=>g.street),
                shopr= value.Where(x => x.street + " " + x.shop == key).Select(g => g.shop)
            }).Select(x=>x.streetr+" "+x.shopr+" "+x.sum).Show();