hdu3355 Bomb

本文探讨了恐怖分子如何通过改进时间炸弹并利用特定数字序列来增加爆炸威力的问题。面对给定的数字N,分析了如何计算包含特定子序列'49'的计数序列对爆炸威力的影响,揭示了数字序列在恐怖主义活动中的潜在风险。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

Description
The counter-terrorists found a time bomb in the dust. But this time the terrorists improve on the time bomb. The number sequence of the time bomb counts from 1 to N. If the current number sequence includes the sub-sequence "49", the power of the blast would add one point. 
Now the counter-terrorist knows the number N. They want to know the final points of the power. Can you help them? 
 
Input
The first line of input consists of an integer T (1 <= T <= 10000), indicating the number of test cases. For each test case, there will be an integer N (1 <= N <= 2^63-1) as the description. 


The input terminates by end of file marker. 
 
Output
For each test case, output an integer indicating the final points of the power.
 
Sample Input
3
1
50
500 
 
Sample Output
0
1
15 
Hint

From 1 to 500, the numbers that include the sub-sequence "49" are "49","149","249","349","449","490","491","492","493","494","495","496","497","498","499", so the answer is 15.



评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值