HDOJ 1865 1sting 13.04.21 周赛结题报告（大数加法）

本文链接：https://blog.youkuaiyun.com/sio__five/article/details/8845455

1sting

Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 2227 Accepted Submission(s): 875

Problem Description

You will be given a string which only contains ‘1’; You can merge two adjacent ‘1’ to be ‘2’, or leave the ‘1’ there. Surly, you may get many different results. For example, given 1111 , you can get 1111, 121, 112,211,22. Now, your work is to find the total number of result you can get.

Input

The first line is a number n refers to the number of test cases. Then n lines follows, each line has a string made up of ‘1’ . The maximum length of the sequence is 200.

Output

The output contain n lines, each line output the number of result you can get .

Sample Input

Sample Output

  
  
   
   1
2
8
  
  
  
  

  
  
  
  

  
  
  
  
   
   解题思路：
  
  
  
  
   
   	一开始还以为要用组合数学来做了。。
  
  
  
  
   
   	后来发现原来是个斐波那契数列。
  
  
  
  
   
   	悲剧的是将200的字符串长度看成了20。。。 硬生生的把一道高精度加法当做了简单加法做。。
  
  
  
  

  
  
  
  
   
   算法：
  
  
  
  
   
   	高精度计算。
  
  
  
  

  
  
  
  
   
   代码：
  
  
  
  
   
   #include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
using namespace std;
int a[201][101]={0};
int main ()
{
    int n,i,j;
    a[1][100]=1;
    a[2][100]=2;
    for (i=3; i<=200; i++)
    {
        for (j=100; j>=0; j--)
        {
            a[i][j]+=a[i-1][j]+a[i-2][j];
            if (a[i][j]>=10)
            {
                a[i][j-1]+=a[i][j]/10;
                a[i][j]=a[i][j]%10;
            }
        }
    }
    cin>>n;
    while(n--)
    {
        char str[210];
        cin>>str;
        int l=strlen(str);
        int p;
        for (j=0; j<=100; j++)
            if (a[l][j]!=0)
                break;
        p=j;
        for (j=p; j<=100; j++)
            cout<<a[l][j];
        cout<<endl;
    }
    return 0;
}