Editorial for Số hiệu tổ hợp
Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.
Submitting an official solution before solving the problem yourself is a bannable offence.
- Mảng qhđ: \(C[i,j]\) là tổ hợp chập \(i\) của \(j\)
- \(C[0, 0] := 1\);
- \(C[i, j] := C[i, j – 1] + C[i – 1, j – 1]\);
- Làm tương tự bài SHHV;
- Dùng số lớn.
Nguồn: kbook3
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