It's a long time I have been in codeforces and solving problems .... I can solve the A problems very quickly ( at most 10 minutes ) But how much I try I cannot solve the B problem ... What should I do ? Notice : I'm 15 and I'm a beginner ..
It's a long time I have been in codeforces and solving problems .... I can solve the A problems very quickly ( at most 10 minutes ) But how much I try I cannot solve the B problem ... What should I do ? Notice : I'm 15 and I'm a beginner ..
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Read editorials on Problem B after round and try to write solution based on explanation.
Try again. It's help me.