UVA 10192 Vacation

求最长公共子序列，注意到输入有空格，用gets（）就可以了。

代码如下：

#include<stdio.h>
#include<string.h>
#define MAXN 100 +10
char m[MAXN], f[MAXN];
int r[MAXN][MAXN], n;
void dp()
{
    int lenm = strlen(m+1);
    int lenf = strlen(f+1);
    for(int i = 1; i <= lenm; i ++)
        for(int j = 1; j <= lenf; j ++)
        {
            if(m[i] == f[j]) r[i][j] = r[i-1][j-1] + 1;
            else if(r[i][j-1] > r[i-1][j]) r[i][j] = r[i][j-1];
                     else r[i][j] = r[i-1][j];
        }
    printf("Case #%d: you can visit at most %d cities.\n",n,r[lenm][lenf]);
}
void input()
{
    n = 0;
    while(gets(m+1) != NULL)
    {
        if(m[1] == '#') break;
        gets(f+1);
        n ++;
        memset(r,0,sizeof(r));
        dp();
    }
}
int main()
{
    input();
    return 0;
}