寒假刷题之1——以生态为名义的剥削

  取这个名字just for fun，绝不是有反政府的意思哦。。。

  原题为：

Problem A

Ecological Premium

Input: standard input

Output: standard output

Time Limit: 1 second

Memory Limit: 32 MB

German farmers are given a premium depending on the conditions at their farmyard. Imagine the following simplified regulation: you know the size of each farmer's farmyard in square meters and the number of animals living at it. We won't make a difference between different animals, although this is far from reality. Moreover you have information about the degree the farmer uses environment-friendly equipment and practices, expressed in a single integer greater than zero. The amount of money a farmer receives can be calculated from these parameters as follows. First you need the space a single animal occupies at an average. This value (in square meters) is then multiplied by the parameter that stands for the farmer's environment-friendliness, resulting in the premium a farmer is paid per animal he owns. To compute the final premium of a farmer just multiply this premium per animal with the number of animals the farmer owns.

Input

The first line of input contains a single positive integer n (<20), the number of test cases. Each test case starts with a line containing a single integer f (0<f<20), the number of farmers in the test case. This line is followed by one line per farmer containing three positive integers each: the size of the farmyard in square meters, the number of animals he owns and the integer value that expresses the farmer’s environment-friendliness. Input is terminated by end of file. No integer in the input is greater than 100000 or less than 0.

 

Output

For each test case output one line containing a single integer that holds the summed burden for Germany's budget, which will always be a whole number. Do not output any blank lines.

 

Sample Input

3

5

1 1 1

2 2 2

3 3 3

2 3 4

8 9 2

3

9 1 8

6 12 1

8 1 1

3

10 30 40

9 8 5

100 1000 70

Sample Output

38

86

7445

  题目实在太长而且都是英语，看得我很蛋疼，我觉得我写程序的时间可能会比不上去看那些英语的时间。。。看来英语很重要啊。。。

   我研究了老半天，题目大概讲放牛放羊的收费问题：

前面一段内容为：每个动物占据的平均空间(平方米)乘以环境友好型参数等于农民为每只动物交的钱

input内容为：输入n个农民，然后每个农民分别有f块地，输入f组3个数字，分别代表总面积，牛的个数，友好型参数

最后输出要交的总费用。。。

   这不是一场以生态为名义的剥削嘛。

   那么就求出每个动物占据的平均空间(平方米)就可以了。。

   然后我发现了发现了一个东西，那就是牛的数量完全不需要用到！

   太坑爹了这题目。。。以前好像也做过这种题目，看来杭州oj很喜欢这种题目。。。

   我觉得我花那么多时间真像个白痴。。。

   ok，开始撸代码了。。。

#include<stdio.h>


int main()
{
	long int i, j, sum[20] = {0}, n, f, a, b, c;
	scanf("%ld", &n);
	
	for (i = 0; i < n; i ++){
		scanf("%ld", &f);
		for (j = 0; j < f; j ++){
			scanf("%ld%ld%ld", &a, &b, &c);
			sum[i] += a * c;
		}
	}
	
	for (i = 0; i < n; i ++)
		printf("%ld\n", sum[i]);
	
	return 0;
}

   很快就出来了，调试也正常，accepted了，很好很好。

   其实我是习惯性的用long int型，如果实际上的话用int应该就可以了，而且我想应该不需要那么多变量，for用while代替应该可以省略i,j两个变量，尝试了一下发现后面输出部分的循环就无法实现了，而且考虑到sum[i]这个数组也需要用到i变量，所以最多也就省掉j变量，果然我还是太弱。。。

    不过这次这题是头几题比较容易，后面估计会难点。

PS:发布后发现排版果然出问题，蛋疼啊，我那规范的排版都抽了，不知道要怎么解决，先这样放着吧。。。（已经用样式解决了）