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[C++] ์กฐํ•ฉ(combination)

  • 2021.08.27 15:22
  • ๐Ÿฅš๊ณ ๋ฆฌ์ฆ˜
๊ธ€ ์ž‘์„ฑ์ž: caputdraconis
๋ฐ˜์‘ํ˜•
	long long ans = 1;
    cin >> m >> n;

    for (int i = 1; i <= m; i++)
    	ans = ans * (n - i + 1) / i;
    cout << ans << '\n';

 

์‹œ๊ฐ„์ดˆ๊ณผ๊ฐ€ ๋ฐœ์ƒํ•˜๋Š” ์ฝ”๋“œ๋ฐ–์— ์ƒ๊ฐ์ด ์•ˆ๋‚ฌ๋Š”๋ฐ,, ์š”๋กœ์ฝ”๋กฌ ๊ตฌํ˜„์ด ๋œ๋‹ค๋‹ˆ!!!?!?!??

 

 

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