3ܤäƤΤϡ֣פʤʡääƤޤ
1118ڡ 0:19:33 51042
EG
3ܤξ郎ޤǡٹͤƤ12Ĥ¤990ޤǤˤʤʤ
ä¤ޤͤΤä񤷤Ǥ͡
1118ڡ 0:20:42 51043
ġ
(A+B+C+D)99=ABCDʤΤǡA+B+C+D9ܿȤ狼ꡢ11ܿȽˡ¤μ¤18Ȥ狼Τ1899=1782Ȥʤޤ
1118ڡ 0:21:40 51044
ɥȥ
ǽ顢ʤȤ뤫Ȼפޤɤ߹ߤ3ܤȤ郎
1118ڡ 0:22:48 51045
٥륯åĥ
ꤨʤΤDzְäƤȻפäƤޤ͡
ư̤οʿѡ11123ư̤ο¡99οʤΤǡ99ܿƤϤޤΤõƤߤޤ
Ȥˡϲƹͤޤ
1118ڡ 0:23:07 51046
鯤ο
#51044
ĤƱǤ
1118ڡ 0:30:37 51047
鯤ο
#51047
­
4abcdȤȡ12Ĥο¤99(a+b+c+d)
abcd99(a+b+c+d)
abcd9ܿ顢a+b+c+d9ܿ
abcd11ܿ顢d-c+b-a0Ĥޤꡢb+d=a+c
a+b+c+d2(a+c)9ܿ
äơa+cb+d9ܿ
a,b,c,dϰۤʤ顢a+c=b+d9
äơ
abcd99(a+b+c+d)99*(9+9)1782
//

1118ڡ 0:39:36 51048
鯤ο
#51048
12Ĥο¤99(a+b+c+d)
12Ĥο¤3ܤ99(a+b+c+d)
1118ڡ 0:40:50 51049
Shin Koba
ɮơAB00ABACDEȤޤ
ȡBE10AD9C1BǤ
ΤȤ顢ABCD109118Ǥ
ä18991782Ǥ
1118ڡ 0:46:23 51050
ǯ
פǤϤɤƤ⣴ˤʤʤΤǡ2ܤĴ٤Ĥ餺
̵Τǡ0594ä
Ф餯Ƥߤ齤Ƥޤ
991000/9911ܡ9+8+7+6=30ܤǡ­ܿˤʤͤޤ
1118ڡ 0:46:32 51051
Shin Koba
ߤޤ󡢺ǸACDE18991782δְ㤤Ǥ
ܿͤޤɬפʤ˻פޤ㤤Ǥ鿽櫓ޤ
1118ڡ 0:50:19 51052
ֿء׾ι
ȤäƤޤޤ( )
1118ڡ 1:08:25 51053
⡼ޥ
1782ǤäƤchromeǤ줺...??? ǤäƤߤǼĤ˺ܤޤ ^^
safariޤ ^^
4abcd=n
33*(a+b+c+d)*3=n
so...n9ܿ
a+b+c+d09,18,27
9*99...x
18*99=1782
27*99=2673...¤18x

ɡ1782Ǥ͢
1118ڡ 1:20:26 51054
ߤ
ο£ãĤϣܿܣ¡ܣáܣĤ⣹ܿʤ
ȤϻפĤʤäΤǡäݤˡǡ

ܣ¡ܣáܣĤϣʾ壳ʲʤΤ
ߣ᣹顡ߣᣲޤǤ
ܿ˳ǧФ褤ˤʤ룱ߣᣱ
ʹߤϣ­Ȥɴΰ̤ΰ̤롡Τǡ
ư̤¤ϣΤޤޤѤʤ

äơư̤¤ΤȤ˹礦
äơߣᣱ
1118ڡ 2:58:20 51055
ֿء׾ι
Ȥꤢ礤ΤΤǤ
(1000..9999).each{|i|if i.digits.sum*33*3==i then p i end}
1118ڡ 2:58:27 51056
Ȥ
Basic

for a=1 to 9
for b=0 to 9
for c=0 to 9
for d=0 to 9
if 3*(10*a+b+10*b+a+10*a+c+10*c+a+10*a+d+10*d+a+10*b+c+10*c+b+10*b+d+10*d+b+10*c+d+10*d+c)=10^3*a+10^2*b+10*c+d then print a;b;c;d
next d
next c
next b
next a
end

f9ơ1728()
˭ԡ 1118ڡ 5:31:25 MAIL:fttnm528@ybb.ne.jp 51057
ɥȥ
#51044Ŀ¤#50148鯤οͤƱǤ
A+CB+Dκ11ȤƤ⡢19ˤʤäƥǤ͡
1118ڡ 7:18:12 51058
ɥȥ
#50148ǤϤʤ#51048Ǥ͡
1118ڡ 7:21:36 51063
Ǹμ̿
ѥǥץäƤߤޤ
for a in range(1,10):
for b in range(1,10):
for c in range(1,10):
for d in range(1,10):
if a!=b!=c!=d and ((10*a+b)+(10*a+c)+(10*a+d)+(10*b+a)+(10*b+c)+(10*b+d)+(10*c+a)+(10*c+b)+(10*c+d)+(10*d+a)+(10*d+b)+(10*d+c))*3==1000*a+100*b+10*c+d:
print("a=",a,"b=",b,"c=",c,"d=",d)
ans=1000*a+100*b+10*c+d
print("ans=",ans)
1118ڡ 13:44:10 MAIL:syokyuhsya@gmail.com 51064

Ʒο夫abcdȤ99(a+b+c+d)
9ܿǤΤdzƷ¤Ǥa+b+c+d9ܿ
Ʒο1ưۤʤΤa+b+c+d30ʲ
99(a+b+c+d)4ȤʤΤa+b+c+d11ʾ塣
11ʾ塢30ʲ9ܿ1827ʤΤǷ׻ƳΤ18դŬ뤬27Ŭʤ
1118ڡ 20:18:03 51065
Ȥ(8)
οabcdȤ
ο12ĤĤΤ
abcd10ΰ̡ΰ̤˳ƣȤ

äơ狼
3ߡ103ߡa+b+c+d+3ߡa+b+c+d)=99(a+b+c+d)

ơabcdˤʤ褦a+b+c+dϡ1136

a+b+c+d11ΤȤabcd99*111089¤18
a+b+c+d򣱤Ĥ䤷abcd99
ʤabcdbdΤ򷫤֤
b9μ0 d0μ9
acοѤ20ޤǡʤȤ¤18ǰꡣ

顢a+b+c+d18ΤȤabcd=1782

ʤa+b+c+d=20ʾΤȤǤ⡢¤18
̸޻ԡ 1118ڡ 22:33:57 51066
(Keigei)
٤ȤǤ
ʸ֤ܤȤȡפˤʤäƤޤ
1118ڡ 23:10:02 51067
ֿء׾ι
Ĥޤ󤳤ȤǤ

99(2ʲμˤγư̤ο¤18ˤʤ

99(10x+y)(100-1)(10x+y)=1000x+100y-10x-y
=1000x+100(y-1)+10(10-x)-y
=1000x+100(y-1)+10(9-x)+(10-y)

Ȥʤư̤οxy-1,9-x10-yǤΤǡ¤ϡx+y-1+9-x+10-y=18

1119ʶ 8:41:35 51068
nigg
Ǥ
1121 23:22:07 51069