Karate Kid 2

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Dre is a karate student. He is preparing for a karate tournament which will take place in $N$ days. Currently, his strength is $S1$. To win the competition, he needs a minimum strength of $S2$. Each day of practice helps Dre gain strength by S3. While each day of rest decreases his strength by S4. He cannot practice continuously for more than 5 days, i.e. after 5 days of continuous practice, he

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solution.cppC++17

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