add f1

162b7f71 · CHAW AKAMETTA ENLING · 162b7f71
Commit 162b7f71 authored Sep 30, 2018 by CHAW AKAMETTA ENLING
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f1.cpp f1.cpp +8 -0

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--- a/f1.cpp
+++ b/f1.cpp
+# include<iostream>
+using namespace std;
+int main(){
+	int k;
+	cin >> k;
+	cout << 2*k << endl;
+}
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