为什么10分了呀?

#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ll;
const int inf=0x3f3f3f3f;
ll n,m,c,k,wmy,gu=1;
ll s[70];
int main(){
	freopen("zoo.in","r",stdin);
	freopen("zoo.out","w",stdout);
	scanf("%lld%lld%lld%lld",&n,&m,&c,&k);
	for(int i=0;i<n;i++){
		ll a=0;
		scanf("%lld",&a);
		wmy=(wmy|a);
	}
	s[0]=1;
	for(int i=1;i<=c;i++){
		s[i]=s[i-1]*2;
	}
	for(int i=0;i<m;i++){
		ll a=0,b=0;
		scanf("%lld%lld",&a,&b);
		if((wmy|s[a])!=wmy){
			wmy=(wmy|s[a]);
			gu++;
		}
	}
	cout<<s[c-gu]-n;
	return 0;
}