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）
