DCP-257: Divided Lucky Number Back to All Problems

Easy Math > Number Theory


Towhid loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. Unfortunately, not all numbers are lucky. Towhid calls a “Divided Lucky Number” if the number is divided by **n, 4 and 7** . For example, if n=3 then “Divided Lucky Number“ are 84 , 252, 444444. Input: ------ Input starts with an integer **T (T≤ 10000)** , denoting the number of test cases. The next line contains an integer **n (1 ≤ n ≤ 10^15)**. Output: ------- For each case, print one line containing **“Divided Lucky Number”** If there are **multiple solutions**, print minimum value of them and value must be grater than zero . Sample Input ------------ 3 11 3 5 Sample Output ------------- 308 84 140


Problem Setter:

Anowar Hossain Anu

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Problem Limits

Language Time Limit (seconds)
C 1.00
C++ 1.00
C++14 1.00
C# 2.00
Go 2.00
Java 2.00
JavaScript 2.00
Objective-C 2.00
Perl 2.00
PHP 2.00
Python 2.00
Python3 2.00
Ruby 2.00
VB.Net 2.00

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# User Language Timing
01 SakibAlamin Cpp14 0.00s
02 nafiamahjabin Cpp14 0.00s
03 mahbubcseju Cpp14 0.00s
04 AresGod Cpp14 0.00s
05 prottoy919 Cpp14 0.00s
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12 Robbinb1993 Cpp 0.00s
13 souravahmed C 0.00s
14 mamun02inf Cpp 0.01s
15 monir769 C 0.01s
16 ssavi Cpp14 0.01s
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20 Monira_Nasrin Cpp14 0.01s
21 rifat_06 Cpp14 0.01s
22 bafar Cpp14 0.01s
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24 rofi93 Cpp14 0.01s
25 reshan13 Cpp14 0.01s
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27 Dragon_Curve Cpp14 0.01s
28 sahedsohel Cpp14 0.01s
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30 snow_man Cpp14 0.01s
31 nasif2587 Cpp14 0.01s
32 moshiur_cse15 Cpp14 0.01s
33 emrul Cpp14 0.02s
34 kzvd4729 Cpp14 0.02s
35 jahid_ict Cpp14 0.02s
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38 _c_k_r_ Cpp14 0.02s
39 motaleb_ICT Cpp14 0.02s
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41 rayhan50001 Cpp14 0.02s
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46 DynamicOvi Cpp14 0.02s
47 Aman_khan Cpp14 0.02s
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