diff --git a/ICPCarchive/2557.cc b/ICPCarchive/2557.cc
new file mode 100644
index 0000000..fe57f21
--- /dev/null
+++ b/ICPCarchive/2557.cc
@@ -0,0 +1,19 @@
+#include <iostream>
+#include <cmath>
+
+using namespace std;
+
+int main() {
+    int n;
+    cin >> n;
+    for(int i = 0; i < n; ++i) {
+        int t;
+        cin >> t;
+        int count{0};
+        for(int i = 1; i <= t; ++i) {
+            int k = sqrt(i);
+            if(k * k == i) ++count;
+        }
+        cout << count << endl;
+    }
+}
\ No newline at end of file