HDU-2212 DFS
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DFS
Time Limit: 5000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8889 Accepted Submission(s): 5439
Problem Description
A DFS(digital factorial sum) number is found by summing the factorial of every digit of a positive integer.
For example ,consider the positive integer 145 = 1!+4!+5!, so it's a DFS number.
Now you should find out all the DFS numbers in the range of int( [1, 2147483647] ).
There is no input for this problem. Output all the DFS numbers in increasing order. The first 2 lines of the output are shown below.
For example ,consider the positive integer 145 = 1!+4!+5!, so it's a DFS number.
Now you should find out all the DFS numbers in the range of int( [1, 2147483647] ).
There is no input for this problem. Output all the DFS numbers in increasing order. The first 2 lines of the output are shown below.
Input
no input
Output
Output all the DFS number in increasing order.
Sample Output
12......
Author
zjt
水题
#include <iostream>#include <stdio.h>#include <algorithm>#include <string.h>#include <cmath>#include <string>using namespace std;int f[10];int t[10];int sum;int tmp;void init(){ t[0]=1; for(int i=1;i<=9;i++){ t[i]=t[i-1]*i; }}void fun(int n){ sum=0; tmp=n; while(tmp){ sum+=t[tmp%10]; tmp/=10; } if(sum==n){ cout<<n<<endl; }}int main(){ init(); for(int i=1;i<=10*t[9];i++){ fun(i); } return 0;}
1214540585
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