delete pics to save space

7.3889.cpp

@@ -0,0 +1,39 @@
+#include<cstdio>
+#include<cmath>
+#include<algorithm>
+using namespace std;
+typedef long long LL;
+struct Point
+{
+	LL x,y;
+	Point(LL xx=0,LL yy=0):x(xx),y(yy) { }
+};
+int T;
+LL n,S,D;
+Point f(int n,LL m)
+{
+	if(n==0) return Point(0,0);
+	LL len=1<<(n-1),blo=1<<(2*n-2);
+	Point p=f(n-1,m%blo);
+	int z=m/blo;
+	if(z==0) return Point(p.y,p.x);
+	if(z==1) return Point(p.x,p.y+len);
+	if(z==2) return Point(p.x+len,p.y+len);
+	if(z==3) return Point(2*len-p.y-1,len-p.x-1);
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d",&T);
+	while(T-->0)
+	{
+		scanf("%I64d%I64d%I64d",&n,&S,&D);
+		S--; D--;
+		Point a=f(n,S),b=f(n,D);
+		LL dx=a.x-b.x,dy=a.y-b.y;
+		printf("%.0f\n",sqrt(dx*dx+dy*dy)*10);
+	}
+	return 0;
+}