Hey guys, just wanna share my approach and wanna know your way of doing them!

Problem A: Walk the Line

Quite a famous puzzle, sorting the array and the traveller with min element always takes others to other end.

Problem B: Line by Line

lets say probability is x (p/100), for the n-1 lines, total prob. is x^(n-1) and lets say we have y as the increased prob. so y^n = x^(n-1) => y = x^(1-1/n). So our increase is p — y*100. (Use doubles)

Problem D1: Line of Delivery (Part 1)

As each of the stone can replace next stone and pass on the energy, the final positions will be the same as input energies. If 0 to i stones are thrown, the resulting positions will be sorted energies of 0 to i. So just sorting the array and indexing 1 from end works. Taking the upper or lower key with min difference for each G outputs ans.

Problem C: Fall in Line

Problem D2: Line of Delivery (Part 2)

If you guys solved problem C & D2, please let me know your approaches.