ˤ
졩񤭹ߤʤԶ硩

case 1 飲ϣ飲饢
case 2 飵 ϣ飵饢
625+1225=1850
Ķļˡ 39ڡ 8:30:43 46054
ФȤ
󥭥󥰤(?)ˤʤäƷǼ褦ˤʤޤ͡
Ϥˤ󤵤ȰǤºݤCdzΤƤߤ1850ˤʤޤ

ʲ
int i,j,count=0;
for(i=1;i<=50;i++){
for(j=1;j<=50;j++){
if(i!=j && j<=i*2)
count++;
}
}
printf("%d",count);
39ڡ 8:34:20 46055
Ȥ
Basic ǡ=a,=bȤ

FOR a=1 TO 50
FOR b=1 TO 50
IF b<>a AND b<=2*a THEN LET s=s+1
NEXT b
NEXT a
PRINT s;"()"
END

f9ơ1850()
˭ԡ 39ڡ 9:19:09 46056
ǯ
񤭹ߤʤΤϡФ餯ǼĤʤäΤdz󿲤ƤޤäᡪʻϤθǤ
#46054ƱǤ
(1+3+7++49)++49*(50-25)=1850
39ڡ 9:12:20 46057
DSK24
괪㤤Ƥޤ
1/2Ƿ׻Ƥޤä
ɤоǤ⤤Ǥ(^-^)
39ڡ 9:58:36 46058
ϥ饮㡼ƥ
ʸϤ򤤤ᤷƹͤޤޤǤ

ǼĤ꤬ʤä褦ǤʤäΤǤ
Ԥ˺ܤäƤޤץǤ
39ڡ 10:00:49 HomePage:˥46059
٥륯åĥ
ľä褦Ǥ͡
125ޤǤϥ2ܤ250ʲ2650ޤǤ50ۤ50ޤǤʤΤ50ʲ
2+50ˡ252+50251900
ᥤʬ50̤1850ˤʤޤ
39ڡ 10:23:39 46060
ֿء׾ι
ޤǣĤĤǤϤʤΤǤϡȤͤƤߤƤǧڤʤǺǤޤ
ʣܣܡܣˡܣߣᣲܡʣݣˡߣˤäưŻǤ
39ڡ 10:31:33 46061

ޤϤߤʤƱǤ
ϡʡäѤʤʡʤޤߥ˰㤤ʤˢ졩Ψ㤤ޤޢ䤬뺢ˤϿͤƤΤ̢ߥ˰㤤ʤäȹäƤ
ȤήǤ
餹褹ơդȴ뤫ȻפäƤΤǡդˤɤۥäȤƤޤ
39ڡ 10:47:46 46062
Mr.ǥ
ϡǧڤ⤵ʤ̾ܤʤΤǡ׻ľΤǤ
1850ˤʤʤץߥߥȻפʤ龲˽ޤ

150ޤǤֹդȤޤĤĤʣĤĤ뤫ϡ
ʸϤϤäꤷʤΤǡεˡ֣ĤġפȤȤ
Ƥ줿褤Ȼפޤ
ʡᤵʤפȤΤǣĤĤȤĤǤȤϲ¬ޤ
Ϥɬפȡ
ʤ
֡ʥˤϡʥˤ礭ʥˤΣܰʲפȤ⥢꤫ʤȻפޤ
39ڡ 11:08:04 46063
ؤ
69169119611881ȡ1ĤΥܡ2̤ι꤫ͤʤȤפޤ
ñʤߥäΤ
39ڡ 11:53:52 46064
ؤ
69169119611881ȡ1ĤΥܡ2̤ι꤫ͤʤȤפޤ
ñʤߥäΤ
39ڡ 11:55:40 46065
dyslexia
ҤäǤ⤢ΤʤȻפä ǤʤʤΤ
̤˿ޤ25 50ޤǤ ơ49Ĥ 2649= 1274
24 47Ĥ ʲ1ޤǤ 472 äƤä פ576
ξ­ 1850ȸȤǤ͡
39ڡ 12:28:03 46066
uchinyan
Ϥˤϡơϡ
ϴñȤƤʸʤפȻפäΤǤճճΨ㤤Ǥ͡
ȥ֥뤬äΤ쥹ߥ¿Τʡˤ衤ʴǡ

* 2 > 50 > 25Ĥޤꡤ 26 50 ξϡϥʳ 1 50 Τǡ49 * 25 = 1225 ̤ꡣ
* 2 <= 50 <= 25Ĥޤꡤ 1 25 ξϡϥʳ 1 * 2 Τǡ
= 1 25 Фơ * 2 - 1 ̤ꤺġŪˤϡ1, 3, 5, , 47, 49 ̤ꡣ
פˡ1 50 δʤΤǡ1 + 3 + 5 + + 47 + 49 = 25 * 25 = 625 ̤ꡣ
ǡǡ1225 + 625 = 1850 ̤ꡤˤʤޤ

ʤ虜虜񤷤ɬפϤʤǤɸʿ̤ˤƳʻθĿƤ⤤Ǥ͡
κݤ˥ԥåȤСԥåΤ褤ˤʤǤ礦
39ڡ 12:42:24 46067
uchinyan
ǼĤɤߤޤ


ʲεҤϡ⤽ϻ伫ȤٶΥ˲᤮ʤΤǤ
޳ѤʤΤǤͤޤǤˤȻפäƸΤǤ
Ȥ⤢äơˡʬϻ F.A.Q. ΡֻϰϡפεҤ򻲹ͤˡ
ĿͤǤиǼŪ˹ԤäƤΤǤäơҴŪʤΤǤϤޤ
ޤǤ⤴ͤǤ餺

Ψ㤤ΤϡϤꡤԷǼĤʤȤȥ֥뤬äǤ͡Ǽ
ˡϳƱǡ1 25 26 50 ʬƹͤ롤ȤȤΤ褦Ǥ
39ڡ 13:06:29 46068
⡼ޥ
줺...äǼĸ餤Ĥξ֤ǤäѤOrz... ^^;
but...ʬΤְäƤ褦ǡ^^;...äޤ ^^;;

#46063 Mr.ǥͤƤߤޤ.
1850顢1+2++49=50*49/2 ФǤ
Ȥ...
1252(1+2++25)-25=25*26-25=25^2
265025*50-25=25*49
so
25*(25+49)=25*74=7400/4=1850

25^2=625
Ǥ ^^
39ڡ 14:44:12 46069
ë徾
125椬ʿ
255049
39ڡ 15:51:56 46070
ˤ⡼
Фϡ
äƤȤǤ礦
ޥͤ줵ޤǤ

ơľǡľ˵᤿Ǥ

ʣ˥ξ
ΰϡˤĤơ줾졡ʥߣݣ̤
ä(1+2+3++24+25)*2-1*25625̤

ʣ˥ξ
ΰϡʣݣˡߣ1225̤

äơ625+12251850̤
ʾ

ϡ
_//

' `
| ϡϡ|

׵,ءޡ
___΢ޡ_)
ڽǤΤޤ¡ 39ڡ 19:57:35 46071
Mr.ǥ
⡼ޥ󤵤#46069
ͤƤͭ񤦤ޤ
⡡Ʊ̤Ǥ
ξ
()1,2,3,,25 ΤȤʥ)ϡ1,2,3,,25(̤
()26,27,28,,49,50 ΤȤʥ)ϡ24,23,2,1,0(̤
äơ24*252525^2625̤ˤȤޤ
39ڡ 20:07:47 46072

ʥˤ˽񤫤줿ʥˤ˽񤫤줿Σܤ礭礬̤꤫ơΤޤ
ʥˤ 1 ΤȤϡʥˤ 350 48̤ꡣ
ʥˤ 2 ΤȤϡʥˤ 550 46̤ꡣ
ʥˤ 3 ΤȤϡʥˤ 750 44̤ꡣ

ʥˤ 24 ΤȤϡʥˤ 4950 2̤ꡣ
ʾʤΤǡ
2+48)242600̤

ΤФΤǡ
50496001850̤ꡢȽФޤ

39ڡ 22:52:03 46073
ǯ
1850ǷǼĤʤäΤǡ򤤤ɤؤޤ
ʣȻפȤơ֥ȥФȡܡˤƤޤȡɤä狼ʤΤǡ
ʥ,ˡ1,2ˡ2,1ˤʥ,=20,35ˡ35,20ˤʤɤƱΤȤƿ
Ȥͤơ1225ȽФϤ狼餺ˤΤǤǤ줺ɿƤޤޤ
39ڡ 23:43:40 46074