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#include <cstdio>
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int n, k, f[210][9];
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int main()
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{
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scanf("%d%d", &n, &k);
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for (int i = 1; i <= n; i++)
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f[i][1] = 1;
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for (int i = 1; i <= n; i++)
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for (int j = 2; j <= k; j++)
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if (i >= j)
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f[i][j] = f[i - 1][j - 1] + f[i - j][j];
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printf("%d", f[n][k]);
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return 0;
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} |
