Joey had saved a permutation of integers from 1 to n in a text file. All the numbers were written as decimal numbers without leading spaces. Then Joe made a practical joke on her: he removed all the spaces in the file. Help Joey to restore the original permutation after the Joe’s joke!
Joey had saved a permutation of integers from 1 to n in a text file. All the numbers were written as decimal numbers without leading spaces. Then Joe made a practical joke on her: he removed all the spaces in the file. Help Joey to restore the original permutation after the Joe’s joke!
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标签： HBC54479《人间油物》 数学 快速傅里叶变换（FFT）/快速数论变换（NTT）/快速沃尔什变换（FWT）Jokewithpermutation题解
