Update maximum-value-sum-by-placing-three-rooks-i.cpp

Author: kamyu104

C++/maximum-value-sum-by-placing-three-rooks-i.cpp

@@ -1,4 +1,4 @@
-// Time:  O(m * n * logk + nCr((k-1)*(2*k-1)+1), 3) * k) = O(m * n)
+// Time:  O(m * n * logk + nCr((k-1)*(2*k-1)+1), k) * k) = O(m * n)
 // Space: O(k * (m + n)) = O(m + n)
 
 // heap, brute force