1063 Set Similarity

Statement

Metadata

作者: CHEN, Yue
单位: 浙江大学
代码长度限制: 16 KB
时间限制: 500 ms
内存限制: 64 MB

Given two sets of integers, the similarity of the sets is defined to be $N_c/N_t\times 100\%$ , where $N_c$ is the number of distinct common numbers shared by the two sets, and $N_t$ is the total number of distinct numbers in the two sets. Your job is to calculate the similarity of any given pair of sets.

Input Specification

Each input file contains one test case. Each case first gives a positive integer $N$ ( $\le 50$ ) which is the total number of sets. Then $N$ lines follow, each gives a set with a positive $M$ ( $\le 10^4$ ) and followed by $M$ integers in the range [ $0, 10^9$ ]. After the input of sets, a positive integer $K$ ( $\le 2000$ ) is given, followed by $K$ lines of queries. Each query gives a pair of set numbers (the sets are numbered from 1 to $N$ ). All the numbers in a line are separated by a space.

Output Specification

For each query, print in one line the similarity of the sets, in the percentage form accurate up to 1 decimal place.

Sample Input

3
3 99 87 101
4 87 101 5 87
7 99 101 18 5 135 18 99
2
1 2
1 3

Sample Output

50.0%
33.3%

Last update: May 4, 2022