a number change #2
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ShreyaswadE
commented
May 28, 2020
| Let f(i, j) be the number of ways of distributing j chocolates to the first i people. | ||
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| Then we can give the j-th person - 0, 1, 2, ... , A[i] chocolates. | ||
| Then we can give the i-th person - 0, 1, 2, ... , A[i] chocolates. |
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The i-th person can get a[i] candies. not the j-th
ShreyaswadE
commented
May 28, 2020
| So, f(i, j) = f(i - 1, j ) + f(i - 1, j - 1) + ... + f(i - 1, j - A[i] - 1) | ||
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| If (j - A[i] - 1), then f(i, j) = f(i - 1, j) + ... + f(i - 1, 0). | ||
| If (j = A[i] - 1), then f(i, j) = f(i - 1, j) + ... + f(i - 1, 0). |
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simply putting in the above formula
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