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X问题

Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 10655    Accepted Submission(s): 3911


Problem Description
求在小于等于N的正整数中有多少个X满足:X mod a[0] = b[0], X mod a[1] = b[1], X mod a[2] = b[2], …, X mod a[i] = b[i], … (0 < a[i] <= 10)。
 

Input
输入数据的第一行为一个正整数T,表示有T组测试数据。每组测试数据的第一行为两个正整数N,M (0 < N <= 1000,000,000 , 0 < M <= 10),表示X小于等于N,数组a和b中各有M个元素。接下来两行,每行各有M个正整数,分别为a和b中的元素。
 

Output
对应每一组输入,在独立一行中输出一个正整数,表示满足条件的X的个数。
 

Sample Input
3 10 3 1 2 3 0 1 2 100 7 3 4 5 6 7 8 9 1 2 3 4 5 6 7 10000 10 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9
 

Sample Output
1 0 3
 

Author
lwg
 

Source
 

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