Can anyone tell me how to solve more than 5 question on codechef ?
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By reading editorial after contest.
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Keep practicing and upsolving ! To speed up the process,try to know and study all the required cp-topics. This way you’ll always have the pre-requisites for most of the problems. So it’ll speed up your upsolving process 
Later or sooner, you’ll reach your target.
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find out reasons why u couldn’t solve them during contest
non of us know u personally so can we provide any valuable tips
u need to find whr u lag by urself
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