Đề thi HSG tin học lớp 8 cấp huyện Nam Trực, Nam Định 2017-2018 - Học Toàn Tập

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I PHONG CIAO DU C VA DAO T4O

NAMTRUC

oE cgirrru rguc .

Citr 3: t 5,0 di,;int ) T6ng rr'6'c

Cho s5 ttr nhi6n N" I( (l< Ar<10,,1<1(<9) DOm s6

DE firr HQC SINr{ crOI CAp mryEN NAM HQC20L7 - 2018

M6n: TIN HQC - Lop: I

Thoi gian ldm bdi: 150 phrit

DC thi g6m: 02 trang

elffL ( a,0 diAn) Tinh ing T\n biti: tong.pas

Cho s6 tu nhi6n N ( I < t/ < 106 ) Tinh t6ng sau.

^S = 2 + 4 + 6 + .+ 2l\r

Dir li6u: vio tir t0p vdn ban ToNG.INP bao g6m 1 s6 ttr nhiOn N duy nh6t

K6t quri: Ghi ra tcp viin bin ToNG.our Ghi kOt cprA cira t6ng trOn.

Vi dr.r:

Ciiu 2 : (5,0 di€nt) SO Dep TAn bcii: soclep.pas

M6t sa) netty6n clttong c1u'cl-c goi li s5 etep n6u t6ng c6c chri so cLra no trong h0 thip ph1n chia hOt cho sd chu's6 cr-ra n6 Cfc s6 du'crc xet kh6ng chira chf,'s6 0 c6 nghia (0123)

Y6u ciu: IJiiy cho Uiet s5 N ccl "Eep" hay kh6ng?

Dfr'li6u: vio tir t0p v[n bin SoDEp.INp ch[ra rn6t so N11< ]/ < 10r8 )

theo N la s6 "Dep" htry khdng

SODEP.INP SODEP.OUT

T€n bdi: tonguoc.pas cac rLdc cua N chia h6t cho K vDr tinh t6ng cic uryc cl6.

Dir li6u: Vr)o tiL tOp vin ban TONGUOC.INP cluy nh6t rndt clong chira hai s6 N, K

KOt qrrri : Ghi la tOp vin ban c6 TOI\GUOC.OUT g6m:

Dong 1 li s5 c6c udc cua N chia h6t cho.I(

Ddng 2 t6ng c6c tr6'c c1ti.

20

Cflu 4: ft,O cliA@ h{ua hirng TAn bdi: mlt.pas

Co n ngtrdi xOp thr\nh hiing theo thri'tr.r c16 mua hing 'l'hdi gian ngtrdi b6n hang phuc vt1 cho ngrrd'i thir i ld t; clon vi thdi gian Hly tirn thdi gian mir ngudi thir k phAi cho c16 mua

hing

Dir liQu: Vio tir tOp r,[n ban MH.I|{P:

- Dong 1: chira hai s5 n, k ngn,vOu cltro-ng (1<k<n< 100);

- Ddng 2: cir[ta,, s5 t,, t2, tn.(Cfc gi5 tr:i t; c16u nguy0n cluong vi nho hon

I 000)

rrio

Vi tlu:

53

t3211

4

An li nhAn viOn giao hing cy nhr\ mii1, cltrdng NhiQm vu cua An lAn nay ld phii giao dfng

n kg dLrdng cho rl6t xi nghi0p bfinh keo O nhi rn6y, cludng clucrc dong g6i tlong 2loqi

t[ri: tiri clu'ng cltroc 3 kg r,i t[ri 5 kg, s6 ltro-ng clrrd'ng tlong m6i tiri phai dugc d6ng dirng r,6'i s[rc chila cria no kh6ng thira vzi 1th6ng thi6Lr.

Vi clu: D0 giao 18 l<g clirtrng An co th0 mang 6 tiri lo1i 3 kg ho[c 3 tiri loai 5 kg vd 1 tiri

lo1i 3 lig An 1r.r6n 1u6n ,.,'r.,6,r chon phr-rong 6n sao cho sO tiri cAn mang li it nhAt.

1'0u ciu: Cho re f t < rV < I0'') IIiy xfc clinh s5 tiri it nh6t cAn -a,rg N6u kh6ng co c6ch

rrans thi clr-ra la s6 - 1

D{i'li\u: Vrio tir t6p viin ban TUIDUOIi{G.INP g6m mQt clong chira s5 nguy6n r.

r

[At tlutt: DrLa rl tOp vln ban'f UIDUOI{G.OUT mQt s6 nguy6n - kOt qr-ri xic dinh drroc

VI drt:

I-I A+

-l tL L - -_

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