2020 CCPC Wannafly Winter Camp Day5 Div.1&2 E题 (暴力）

#include<bits/stdc++.h>
using namespace std;
#define ll long long
typedef pair<int,int> pii;
const int N=1e5+10;
ll n,a[N],b[5],ans;
int main(){
	cin>>n;
	for(int i=1;i<=n;i++)cin>>a[i];
	for(int i=1;i<=4;i++)cin>>b[i];
	for(int i=1;i<=n;i++){
		for(int j=i+1;j<=n;j++){
            if((b[1]==b[2])^(a[i]==a[j]))continue;
			for(int k=j+1;k<=n;k++){
			    if((b[1]==b[3])^(a[i]==a[k]))continue;
                if((b[3]==b[2])^(a[k]==a[j]))continue;
				for(int h=k+1;h<=n;h++){
					if((b[1]==b[4])^(a[i]==a[h]))continue;
					if((b[2]==b[4])^(a[j]==a[h]))continue;
					if((b[3]==b[4])^(a[k]==a[h]))continue;
					ans++;
				}
			}
		}
	}
	cout<<ans<<endl;
}