Problem O

Problem Description

Give you a number on base ten,you should output it on base two.(0 < n < 1000)

Input

For each case there is a postive number n on base ten, end of file.

Output

For each case output a number on base two.

Sample Input

1

2

3

Sample Output

1

10

11

题意：略

解题思路：这是DP么。。。。。。晕；

感悟：晕

代码：

#include
#include
#include
#define maxn 1005
using namespace std;

char s1[maxn],s2[maxn];
int dp[maxn][maxn];//记录当前状态的最长子序列长度

int main()
{
    //freopen("in.txt","r",stdin);
    while(~scanf("%s",&s1))
    {
        scanf("%s",&s2);
        for(int i=1;i<=strlen(s1);i++)
        {
            for(int j=1;j<=strlen(s2);j++)
            {
                if(s1[i-1]==s2[j-1])
                    dp[i][j]=dp[i-1][j-1]+1;
                else if(dp[i][j-1]>dp[i-1][j])
                    dp[i][j]=dp[i][j-1];
                else
                    dp[i][j]=dp[i-1][j];
            }
        }
        printf("%d\n",dp[strlen(s1)][strlen(s2)]);
    }
}