This problem is a programming version of Problem 232 from projecteuler net Two players share an unbiased coin and take it in turns to play "The Race". On Player 1's turn, he tosses the coin once: if it comes up Heads, he scores one point; if it comes up Tails, he scores nothing. On Player 2's turn, she chooses a positive integer Tand tosses the coin T times: if it comes up all Heads, she scores 2-1 points; otherwise, she scores nothing. Player 1 goes first. The winner is the first to n or more points. On each turn Player 2 selects the number, T, of coin tosses that maximises the probability of her winning. What is the probability that Player 2 wins? As the number is obviously rational and can be represented as with integer p and q, write the answer as p x q' (mod 10° + 7) Input Format The first line of each test file contains a single integer q, that is the number of queries. g lines follow, each containing a single integer n. Constraints •1s9s 100 •1sns 175 Output Format Print exactly q lines with the answer to the coresponding query on each line. Sample Input o Sample Output 0 333333336 Explanation 0 The answer is which is equal to 333333336 (mod 10° +7)

This problem is a programming version of Problem 232 from projecteuler net Two players share an unbiased coin and take it in turns to play "The Race". On Player 1's turn, he tosses the coin once: if it comes up Heads, he scores one point; if it comes up Tails, he scores nothing. On Player 2's turn, she chooses a positive integer Tand tosses the coin T times: if it comes up all Heads, she scores 2-1 points; otherwise, she scores nothing. Player 1 goes first. The winner is the first to n or more points. On each turn Player 2 selects the number, T, of coin tosses that maximises the probability of her winning. What is the probability that Player 2 wins? As the number is obviously rational and can be represented as with integer p and q, write the answer as p x q' (mod 10° + 7) Input Format The first line of each test file contains a single integer q, that is the number of queries. g lines follow, each containing a single integer n. Constraints •1s9s 100 •1sns 175 Output Format Print exactly q lines with the answer to the coresponding query on each line. Sample Input o Sample Output 0 333333336 Explanation 0 The answer is which is equal to 333333336 (mod 10° +7)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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