update

Author: kamyu104

C++/sum-of-square-numbers.cpp

@@ -6,7 +6,7 @@ class Solution {
     bool judgeSquareSum(int c) {
         for (long long a = 0; a * a <= c; ++a) {
             auto b = static_cast<int>(sqrt(c - a * a));
-            if (c - a * a == b * b) {
+            if (a * a + b * b == c) {
                 return true;
             }
         }