杭电ACM部分题目答案.docx

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杭电ACM部分题目答案.docx

杭电ACM部分题目答案

杭电ACM

1001SumProblem2

1089A+BforInput-OutputPractice(I)4

1090A+BforInput-OutputPractice(II)6

1091A+BforInput-OutputPractice(III)8

1092A+BforInput-OutputPractice(IV)9

1093A+BforInput-OutputPractice(V)11

1094A+BforInput-OutputPractice(VI)13

1095A+BforInput-OutputPractice(VII)14

1096A+BforInput-OutputPractice(VIII)16

2000ASCII码排序17

2001计算两点间的距离19

2002计算球体积20

2003求绝对值21

2004成绩转换22

2005第几天?

24

2006求奇数的乘积26

2007平方和与立方和27

2008数值统计28

2009求数列的和30

2010水仙花数31

2011多项式求和33

2012素数判定34

2014青年歌手大奖赛_评委会打分36

2015偶数求和38

2016数据的交换输出40

2017字符串统计42

2019数列有序!

43

2020绝对值排序45

2021发工资咯:

)46

2033人见人爱A+B48

2039三角形50

2040亲和数51

姓名:

郑春杰

班级:

电商1001

学号:

1010504134

1001SumProblem

ProblemDescription

Hey,welcometoHDOJ(HangzhouDianziUniversityOnlineJudge).

Inthisproblem,yourtaskistocalculateSUM(n)=1+2+3+...+n.

Input

Theinputwillconsistofaseriesofintegersn,oneintegerperline.

Output

Foreachcase,outputSUM(n)inoneline,followedbyablankline.Youmayassumetheresultwillbeintherangeof32-bitsignedinteger.

SampleInput

1

100

SampleOutput

1

5050

Author

DOOMIII

解答:

#include

main()

{

intn,i,sum;

sum=0;

while((seanf("%d",&n)!

=-1))

{

sum=0;

for(i=0;i<=n;i++)

sum+=i;

printf("%d\n\n",sum);

}

}

1089A+BforInput-OutputPractice

(I)

ProblemDescription

YourtaskistoCalculatea+b.

Tooeasy?

!

Ofcourse!

Ispeciallydesignedtheproblemforacmbeginners.

Youmusthavefoundthatsomeproblemshavethesametitleswiththisone,yes,alltheseproblemsweredesignedforthesameaim.

Input

Theinputwillconsistofaseriesofpairsofintegersaandb,separatedbyaspace,onepairofintegersperline.

Output

Foreachpairofinputintegersaandbyoushouldoutputthesumofaandbinoneline,andwithonelineofoutputforeachlineininput.

SampleInput

15

1020

SampleOutput

6

30

Author

lcy

Recommend

JGShining

解答:

#include

main()

{

inta,b;

while(scanf("%d%d",&a,&b)!

=EOF)printf("%d\n",a+b);

}

1090A+BforInput-OutputPractice

(II)

ProblemDescription

YourtaskistoCalculatea+b.

Input

InputcontainsanintegerNinthefirstline,andthenNlinesfollow.Eachlineconsistsofapairofintegersaandb,separatedbyaspace,onepairofintegersperline.

Output

Foreachpairofinputintegersaandbyoushouldoutputthesumofaandbinoneline,andwithonelineofoutputforeachlineininput.

SampleInput

2

15

1020

SampleOutput

6

30

Author

lcy

解答:

#include

#defineM1000

voidmain()

{

inta,b,n,j[M],i;//printf("pleaseinputn:

\n");scanf("%d",&n);

for(i=0;i

{

scanf

("%d%d",&a,&b);

//printf("%d%d",a,b);

j[i

]=a+b;

}i

=0;

while(

i

{

printf

("%d",j[i]);

i++

J

printf

("\n");

}

1091A+BforInput-OutputPractice

(III)

ProblemDescription

YourtaskistoCalculatea+b.

Input

Inputcontainsmultipletestcases.Eachtestcasecontainsapairofintegersaandb,onepairofintegersperline.Atestcasecontaining00terminatestheinputandthistestcaseisnottobeprocessed.

Output

Foreachpairofinputintegersaandbyoushouldoutputthesumofaandbinoneline,andwithonelineofoutputforeachlineininput.

SampleInput

15

102000

SampleOutput

6

30

Author

lcy

解答:

#include

main()

{

inta

b;

scanf

("%d%d",&a,&b);

while

(!

(a==0&&b==0))

{

printf

("%d\n",a+b);

scanf

("%d%d",&a,&b)

}

}

1092A+BforInput-OutputPractice

(IV)

ProblemDescription

YourtaskistoCalculatethesumofsomeintegers.

Input

Inputcontainsmultipletestcases.EachtestcasecontainsaintegerN,andthenNintegersfollowinthesameline.Atestcasestartingwith0terminatestheinputandthistestcaseisnottobeprocessed.

Output

Foreachgroupofinputintegersyoushouldoutputtheirsuminoneline,andwithonelineofoutputforeachlineininput.

SampleInput

41234

512345

SampleOutput

10

15

Author

Icy

Recommend

JGShining

解答:

#include

intmain()

{

intn,sum,i,t;

while(scanf("%d",&n)!

=EOF&&n!

=0)

{

sum=0;

for(i=0;i

{

scanf("%d",&t);

sum=sum+t;

}

printf("%d\n",sum);

}

1093A+BforInput-OutputPractice

(V)

ProblemDescription

Yourtaskistocalculatethesumofsomeintegers.

Input

InputcontainsanintegerNinthefirstline,andthenNlinesfollow.EachlinestartswithaintegerM,andthenMintegersfollowinthesameline.

Output

Foreachgroupofinputintegersyoushouldoutputtheirsuminoneline,andwithonelineofoutputforeachlineininput.

SampleInput

2

41234

512345

SampleOutput

10

解答:

#include

main()

{

intn,a,b,i,j,sum;

sum=0;

while(scanf("%d\n",&n)!

=-1)

{

for(i=0;i

{

scanf("%d",&b);

for(j=0;j

{

scanf("%d",&a);

sum+=a;

}

printf("%d\n",sum);

sum=0;

}

}

}

1094A+BforInput-OutputPractice

(VI)

ProblemDescription

Yourtaskistocalculatethesumofsomeintegers.

Input

Inputcontainsmultipletestcases,andonecaseoneline.EachcasestartswithanintegerN,andthenNintegersfollowinthesameline.

Output

ForeachtestcaseyoushouldoutputthesumofNintegersinoneline,andwithonelineofoutputforeachlineininput.

SampleInput

41234

512345

SampleOutput

10

15

解答:

#include

main()

{

intn,a,b,i,j,sum;

sum=0;

while(scanf("%d\n",&n)!

=-1)

{

for(j=0;j

{

scanf("%d",&a);

sum+=a;

}

printf("%d\n",sum);

sum=0;

}

}

[CopytoClipboard][SavetoFile]

1095A+BforInput-OutputPractice

(VII)

ProblemDescription

YourtaskistoCalculatea+b.

Input

Theinputwillconsistofaseriesofpairsofintegersaandb,separatedbyaspace,onepairofintegersperline.

Output

Foreachpairofinputintegersaandbyoushouldoutputthesumofaandb,andfollowedbyablankline.

SampleInput

15

1020

SampleOutput

6

30

解答:

#include

main()

{

inta,b;

while(scanf("%d%d",&a,&b)!

=EOF)

printf("%d\n\n",a+b);

}

1096A+BforInput-OutputPractice

(VIII)

ProblemDescription

Yourtaskistocalculatethesumofsomeintegers.

Input

InputcontainsanintegerNinthefirstline,andthenNlinesfollow.EachlinestartswithaintegerM,andthenMintegersfollowinthesameline.

Output

Foreachgroupofinputintegersyoushouldoutputtheirsuminoneline,andyoumustnotethatthereisablanklinebetweenoutputs.

SampleInput

3

SampleOutput

10

Author

Icy

Recommend

JGShining

解答:

intmain

()

{

int

a,b,i,j,l[1000],

scanf

("%d",&i);

getchar();

for

(j=1;j<=i;j++)

l

[j]=0;

for

(j=1;j<=i;j++)

k;

{

scanfgetcharfor

{

("%d",&a);

();

(k=1;k<=a;k++)

scanfgetcharl

("%d",&b);

();

[j]+=b;

}for

printfprintf

(j

=1;j<=i-1;j++)

("%d\n\n",l[j]);

("%d\n",l[i]);

2000ASCII码排序

ProblemDescription

输入三个字符后,按各字符的ASCII码从小到大的顺序输出这三个字符。

Input

输入数据有多组,每组占一行,有三个字符组成,之间无空格。

 

Output

对于每组输入数据,输出一行,字符中间用一个空格分开。

SampleInput

qwe

asd

zxc

SampleOutput

eqw

ads

cxz

Author

Icy

Source

c语言程序设计练习

(一)

Recommend

JGShining

解答:

#include

main()

{

chara,b,c,d;

while(scanf("%c%c%c",&a,&b,&c)!

=EOF){

getchar();

if(a>=b)

{

if(c>=a)

printf

("%c%c%c\n"

b,

a,

c);

elseif

(b>=c)

printf

("%c%c%c\n"

c,

b,

a);

elseif

(b

printf

("%c%c%c\n"

b,

c,

a);

else{

if(c>=b)

printf

("%c%c%c\n"

a,b,c);

elseif

(c>=a)

printf

("%c%c%c\n"

a,c,b);

elseif

(a>c)

printf

("%c%c%c\n"

c,a,b);

2001计算两点间的距离

ProblemDescription

输入两点坐标(X1,Y1),(X2,Y2),计算并输出两点间的距离。

Input

输入数据有多组,每组占一行,由4个实数组成,分别表示x1,y1,x2,y2,数据之间用空格隔

开。

Output

对于每组输入数据,输出一行,结果保留两位小数。

SampleInput

0001

0110

SampleOutput

1.00

1.41

Author

lcy

Source

c语言程序设计练习

(一)

Recommend

JGShining

解答:

#include

#include

main()

{

doublea,b,c,d,s;

while(scanf("%lf%lf%lf%lf",&a,&b,&c,&d)!

=EOF)

{

s=sqrt((a-c)*(a-c)+(b-d)*(b-d));

printf("%.2lf\n",s);

}

}

2002计算球体积

ProblemDescription

根据输入的半径值,计算球的体积。

Input

输入数据有多组,每组占一行,每行包括一个实数,表示球的半径。

Output

输出对应的球的体积,对于每组输入数据,输出一行,计算结果保留三位小数。

SampleInput

11.5

SampleOutput

4.189

14.137

Hint

#definePI3.1415927

Author

lcy

Source

c语言程序设计练习

(一)

Recommend

JGShining

解答:

#include

#definePI3.1415927

main()

{

doublea,v;

while(scanf("%lf",&a)!

=EOF)

{

v=4*PI*a*a*a/3;

printf("%.3lf\n",v);

}

}

2003求绝对值

ProblemDescription

求实数的绝对值。

Input

输入数据有多组,每组占一行,每行包含一个实数。

Output

对于每组输入数据,输出它的绝对值,要求每组数据输出一行,结果保留两位小数。

SampleInput

123

-234.00

SampleOutput

123.00

234.00

Author

lcy

Source

c语言程序设计练习

(一)

Recommend

JGShining

解答:

#include

main()

{

doublea;

while(scanf("%lf",&a)!

=EOF)

{

if(a<0)

a=-a;

printf("%.2lf\n",a);

}

}

2004成绩转换

ProblemDescription

输入一个百分制的成绩t,将其转换成对应的等级,具体转换规则如下:

90~100为A;

80~89为B;

70~79为C;

60~69为D;

0~59为E;

Input

输入数据有多组,每组占一行,由一个整数组成。

Output

"Scoreis

对于每组输入数据,输出一行。

如果输入数据不在0~100范围内,请输出一行:

error!

SampleInput

56

67

100

123

SampleOutput

E

D

A

Scoreiserror!

Author

lcy

Source

c语言程序设计练习

(一)

Recommend

JGShining

解答:

#includeintmain()

{

if(n>100||n<0)printf

("Scoreiserror!

\n

elseif

(n>=90)printf

("A\n");

elseif

(n>=80)printf

("B\n");

elseif

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