Even though I didn't solve the problem nor read the editorial, the last two elves (m=0 case) does not need to be same health, for example:
m=0
h[i] = 10, h[j] = 15
a[i] = 20 (because other elves attacked this elf before), h[j] = 15
Then both elves would die at the same operation
Even though I didn't solve the problem nor read the editorial, the last two elves (
m=0case) does not need to be same health, for example:h[i] = 10, h[j] = 15a[i] = 20 (because other elves attacked this elf before), h[j] = 15Then both elves would die at the same operation