delete pics to save space

2023-08-03 09:22:52 +08:00
commit de60cd6ed4
1334 changed files with 66221 additions and 0 deletions
--- a/1.1822.cpp
+++ b/1.1822.cpp
@ -0,0 +1,33 @@
+#include<cstdio>
+typedef long long LL;
+int A,B,Q[40007],cnt,head,tail;
+void dfs(int x,LL y,int p10)
+{
+	if(y>B) return;
+	if(!x)
+	{
+		int last=y/(p10/10);
+		if(!last) return;
+		dfs(x,y+(LL)last*p10,p10*10);
+		if(y>=A&&y<=B) ++cnt;
+		if(p10<B) Q[tail++]=y;
+		return;
+	}
+	int last=y/(p10/10),nxt=x%10;
+	x/=10;
+	if(last-nxt>=0) dfs(x,y+p10*(last-nxt),p10*10);
+	if(nxt&&last+nxt<10) dfs(x,y+p10*(last+nxt),p10*10);
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d%d",&A,&B);
+	Q[tail++]=7; if(A<=7&&7<=B) ++cnt;
+	do
+		for(int i=0;i<10;i++) dfs(Q[head],i,10);
+	while(++head<tail);
+	printf("%d\n",cnt);
+	return 0;
+}