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| back to board | WA3 please help(+) i can prove my solution by mathans_vect = A^(x-n)*[K]
 
 answer is last digit of ans_vect vector.
 
 A[i-1][i] = 1,  i = 1..n;
 A[n][i] = C[i],  i = 1..n;
Re: WA3 please help(+) I don't know what the 3rd test is, but I've passed it having "int" replaced with "__int64" :) | 
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