diff --git a/a.cc b/a.cc
index da9006d..a85aaed 100644
--- a/a.cc
+++ b/a.cc
@@ -1,8 +1,13 @@
 #include <iostream>
+#include <string>
 
 int main(int argc, char *argv[]) {
-  std::string str;
-  std::cin >> str;
+  std::string str, line;
+
+  while (std::getline(std::cin, line)) {
+    str += line + "\n";
+  }
+
   std::cout << str;
   return 0;
 }
diff --git a/cases/empty.in b/cases/empty.in
index 8b13789..e69de29 100644
--- a/cases/empty.in
+++ b/cases/empty.in
@@ -1 +0,0 @@
-
diff --git a/cases/empty.out b/cases/empty.out
index 8b13789..e69de29 100644
--- a/cases/empty.out
+++ b/cases/empty.out
@@ -1 +0,0 @@
-