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Morona Virus Arrived

By Riaz_BSMRSTU · Limits 2s, 512 MB

“Cover your nose and mouth with a bent elbow or tissue when you sneeze or cough.”

World has defeated the Corona Virus. But, recently another virus spread out, which is named Morona Virus. If anyone got infected with this virus, he/she must die.

This virus has some drawbacks. It can infect someone while it’s a bad weather (such as high temperature, low temperature, rain etc). But, when the weather isn’t good and if someone gets out of home, he/she will be infected for sure.

Mr. hikiko is a daily worker. He has to go out to earn money. When he is at home, he can also earn some little money by doing some freelancing work. When there is no risk, he will go out, else he will stay home.

Now, assume there are n days in a year and also m kind of bad weather can happen every day. You are given the probabilities of these bad weather to happen for every day. And also you know how much money Mr. Hikiko can earn by going out to work or doing some freelancing work by staying home. You have to calculate the Expected amount of money Mr. Hikiko can earn from this year.

You can learn more about Expected Value from here.

Input

First line contain two integer n (1 ≤ n ≤ 1e5), the number of days in this year and m(1 ≤ m ≤ 9), the number of bad weather can happen every day.
Next of every n line contain m integers on each line, where ith integer represent the probability of happening ith bad weather on that day.
Next line contains n integers where, ith integer represents the amount of money Mr Hikiko can earn if he goes out to work at ith day.
Next line contains n integers where, ith integer represents the amount of money Mr Hikiko can earn by doing freelancing work at ith day.

Note: Probabilities are given as percentage (0 ≤ p ≤ 100) and earning amount can be 0TK to 5000TK.

Output

Print the Expected amount of money Mr. Hikiko can earn from this year. It can be shown that the expected value can be represented as P/Q where P and Q are co-prime integers. Print the value of P.Q-1 (mod 1e9+7).

Sample

InputOutput
1 2
50 50
4
4
4

Discussion

Statistics


14% Solution Ratio

mijanurEarliest, 1M ago

jisan047Fastest, 0.1s

jisan047Lightest, 18 MB

mijanurShortest, 1043B

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