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-rw-r--r--progs/a351.py9
1 files changed, 9 insertions, 0 deletions
diff --git a/progs/a351.py b/progs/a351.py
new file mode 100644
index 0000000..ada06e6
--- /dev/null
+++ b/progs/a351.py
@@ -0,0 +1,9 @@
+def nCr_mod_p(n, r, p):
+ if (r > n- r):
+ r = n - r
+ C = [0 for i in range(r + 1)]
+ C[0] = 1
+ for i in range(1, n + 1):
+ for j in range(min(i, r), 0, -1):
+ C[j] = (C[j] + C[j-1]) % p
+ return C[r] \ No newline at end of file