pat甲级1058. A+B in Hogwarts (20)
2018-03-17 10:56
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1058. A+B in Hogwarts (20)
时间限制50 ms内存限制65536 kB
代码长度限制16000 B
判题程序Standard作者CHEN, Yue
If you are a fan of Harry Potter, you would know the world of magic has its own currency system -- as Hagrid explained it to Harry, "Seventeen silver Sickles to a Galleon and twenty-nine Knuts to a Sickle, it's easy enough." Your job is to write a program to compute A+B where A and B are given in the standard form of "Galleon.Sickle.Knut" (Galleon is an integer in [0, 107], Sickle is an integer in [0, 17), and Knut is an integer in [0, 29)).Input Specification:Each input file contains one test case which occupies a line with A and B in the standard form, separated by one space.Output Specification:For each test case you should output the sum of A and B in one line, with the same format as the input.Sample Input:
3.2.1 10.16.27Sample Output:
14.1.28算法设计:
这是一道进制转换的题目,理论上来讲这样的进制转换题目都有两种方法:(1)将输入数据统一转换到最小单位,进行指定运算后,再将得到的结果转换到所要输出的格式;(2)从最小单位开始进行指定运算,向上级单位产生进位或借位,得出最终结果。下面分别给出这两种方法的代码:
第一种方法的C++代码:
#include<bits/stdc++.h> using namespace std; int main(){ int a[3]={0},b[3]={0}; scanf("%d.%d.%d %d.%d.%d",&a[0],&a[1],&a[2],&b[0],&b[1],&b[2]); long long sum=((long long)a[0]*17+a[1])*29+a[2];//有可能超出int存储范围,最好用long long存储 sum+=((long long)b[0]*17+b[1])*29+b[2]; printf("%lld.%lld.%lld",sum/(29*17),sum/29%17,sum%29); return 0; }
第二种方法的C++代码:
#include<bits/stdc++.h> using namespace std; void add(int *a,int *b){ a[2]+=b[2]; if(a[2]>=29){ ++a[1]; a[2]%=29; } a[1]+=b[1]; if(a[1]>=17){ ++a[0]; a[1]%=17; } a[0]+=b[0]; } int main(){ int a[3]={0},b[3]={0}; scanf("%d.%d.%d %d.%d.%d",&a[0],&a[1],&a[2],&b[0],&b[1],&b[2]); add(a,b); printf("%d.%d.%d",a[0],a[1],a[2]); return 0; }乙级1037. 在霍格沃茨找零钱(20)是一道类似的题目,不过它要求计算的是进制的减法,这道题要求做的是进制的加法,有兴趣的同学可以去看一下。
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