杭电题目acm答案

1001 Sum Problem (2)

1089 A+B for Input-Output Practice (I) (4)

1090 A+B for Input-Output Practice (II) (6)

1091 A+B for Input-Output Practice (III) (8)

1092 A+B for Input-Output Practice (IV) (9)

1093 A+B for Input-Output Practice (V) (11)

1094 A+B for Input-Output Practice (VI) (12)

1095 A+B for Input-Output Practice (VII) (13)

1096 A+B for Input-Output Practice (VIII) (14)

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2016数据的交换输出 (38)

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2020绝对值排序 (43)

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姓名：郑春杰

班级：电商1001

学号：34

1001 Sum Problem

Problem Description

Hey, welcome to HDOJ(Hangzhou Dianzi University Online Judge).

In this problem, your task is to calculate SUM(n) = 1 + 2 + 3 + ... + n.

?

Input

The input will consist of a series of integers n, one integer per line.

?

Output

For each case, output SUM(n) in one line, followed by a blank line. You may assume the result will be in the range of 32-bit signed integer.

?

Sample Input

1

100

?

Sample Output

1

5050

?

Author

DOOM III

解答：

#include<>

main()

{

int n,i,sum;

sum=0;

while((scanf("%d",&n)!=-1)) {

sum=0;

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

sum+=i;

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

}

}

1089 A+B for Input-Output Practice

(I)

Problem Description

Your task is to Calculate a + b.

Too easy! Of course! I specially designed the problem for acm beginners.

You must have found that some problems have the same titles with this one, yes, all these problems were designed for the same aim.

?

Input

The input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.

?

Output

For each pair of input integers a and b you should output the sum of a and b in one line, and with one line of output for each line in input.

?

Sample Input

1 5

10 20

?

Sample Output

6

30

?

Author

lcy

?

Recommend

JGShining

解答：

#include<>

main()

{

int a,b;

while(scanf("%d%d",&a,&b)!=EOF) printf("%d\n",a+b);

}