For example, chance is 100% for minimum 0 heads when a coin is tossed 7 times.
Chance is 50% for minimum 2 heads when a coin is tossed 3 times.
Chance is 0% for minimum 12 heads when a coin is tossed 11 times.
this problem could use some nontrivial testcases
Right and wrong
Back to basics 21 - Matrix replicating
Back to basics 26 - Keywords
Given a square and a circle, please decide whether the square covers more area.
given 3 sides, find area of this triangle
swap sign sum & multiply castles
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