delete pics to save space

1.1420.cpp

@@ -0,0 +1,21 @@
+#include<cstdio>
+#include<algorithm>
+using namespace std;
+int n,x,res,now,v;
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d%d",&n,&x);
+	res=now=1; v=x;
+	for(int i=2;i<=n;i++)
+	{
+		scanf("%d",&x);
+		if(x==v+1) { v=x; now++; }
+		else { v=x; now=1; }
+		res=max(res,now);
+	}
+	printf("%d\n",res);
+	return 0;
+}