You're given $n$ integers $a_1,a_2,\dots,a_n$, you need to count the number of ways to choose some of them (no duplicate) to make the sum equal to $S$,. Print the answer in modulo $10^9+7$. How to solve this problem in polynomial time?
Rev. | Lang. | By | When | Δ | Comment | |
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en3 | rlajkalspowq | 2020-04-01 06:00:51 | 197 | |||
en2 | rlajkalspowq | 2019-12-06 17:02:56 | 19 | Tiny change: 'ual to $S$, in modulo' -> 'ual to $S$. Print the answer in modulo' | ||
en1 | rlajkalspowq | 2019-12-06 17:01:08 | 246 | Initial revision (published) |