delete pics to save space

p.HDOJ3949.cpp

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+//http://acm.hdu.edu.cn/showproblem.php?pid=3949
+#include<cstdio>
+#include<cstring>
+#include<algorithm>
+using namespace std;
+unsigned long long a[10005];
+int T,n,m,t;
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d",&T);
+	for(int kase=1;kase<=T;kase++)
+	{
+		scanf("%d",&n);
+		for(int i=1;i<=n;i++) scanf("%I64u",&a[i]);
+		bool flg=0;
+		t=n;
+		for(int i=1;i<=n;i++)
+		{
+			for(int j=i+1;j<=n;j++)
+				if(a[j]>a[i]) swap(a[i],a[j]);
+			if(a[i]==0) { flg=1; t=i-1; break; }
+			for(int k=63;k>=0;k--)
+				if(a[i]>>k&1)
+				{
+					for(int j=1;j<=n;j++)
+						if(i!=j&&(a[j]>>k&1)) a[j]^=a[i];
+					break;
+				}
+		}
+		scanf("%d",&m);
+		printf("Case #%d:\n",kase);
+		while(m-->0)
+		{
+			unsigned long long k,res=0;
+			scanf("%I64u",&k);
+			if(flg) k--;
+			if(k>= (1llu<<t) ) puts("-1");
+			else
+			{
+				for(int i=t-1;i>=0;i--)
+					if(k>>i&1) res^=a[t-i];
+				printf("%I64u\n",res);
+			}
+		}
+	}
+	return 0;
+}