diff --git a/P1401.cpp b/P1401.cpp
new file mode 100644
index 0000000..355b098
--- /dev/null
+++ b/P1401.cpp
@@ -0,0 +1,18 @@
+#include <bits/stdc++.h>
+using namespace std;
+int main()
+{
+    int a, b, c, d;
+    scanf("%d%d%d%d", &a, &b, &c, &d);
+    a = max(abs(a), abs(b));
+    c = max(abs(c), abs(d));
+    if ((long long)((int)a * (int)c) != (long long)a * (long long)c)
+    {
+        puts("long long int");
+    }
+    else
+    {
+        puts("int");
+    }
+    return 0;
+}
\ No newline at end of file