1 files changed, 14 insertions, 0 deletions
diff --git a/works/solutions/leetcode/cpp/69.c b/works/solutions/leetcode/cpp/69.c
new file mode 100644
index 0000000..9914fff
--- /dev/null
+++ b/works/solutions/leetcode/cpp/69.c
@@ -0,0 +1,14 @@
+int mySqrt(int x) {
+  long long l = 0, r = x;
+
+  while (l != r) {
+    long long m = (l + r + 1) / 2;
+    if (m * m <= x) {
+      l = m;
+    } else {
+      r = m - 1;
+    }
+  }
+
+  return l;
+}