[51nod p3058] Xiao ming'ai set [set]

$link$

analysis ：

Similarity degree $=$ Same number of elements $/$ Total elements use $set$ You can find the number of different elements

CODE：

#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstring>
#include<set>
#define reg register
using namespace std;
typedef long long ll;
int T,n,m;
set<int> a;
int main(){
    
	scanf("%d",&T);
	while(T--)
	{
    
		a.clear();
		scanf("%d%d",&n,&m);
		for(reg int i=1,x;i<=n+m;i++)
		{
    
			scanf("%d",&x);
			a.insert(x);
		}
		int len=a.size();
		printf("%d\n",(n+m-len)*100/len);
	}
	return 0;
}