From bd5de06d068d7e1cf357a0cbb60f5c02df6bf20b Mon Sep 17 00:00:00 2001
From: Ren Baoshuo <i@baoshuo.ren>
Date: Thu, 15 Oct 2020 20:01:34 +0800
Subject: [PATCH] P4413 [COCI2006-2007#2] R2

R39857615
---
 problem/P4413/P4413.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 problem/P4413/P4413.cpp

diff --git a/problem/P4413/P4413.cpp b/problem/P4413/P4413.cpp
new file mode 100644
index 00000000..e3db650e
--- /dev/null
+++ b/problem/P4413/P4413.cpp
@@ -0,0 +1,10 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    int s, r1;
+    cin >> r1 >> s;
+    cout << s * 2 - r1 << endl;
+    return 0;
+}