Started on 226th beginner contest of atcoder.jp, a and b finished

atcoder/beginner_contests/226/a.cpp

@@ -0,0 +1,19 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+
+int main(){
+    ios::sync_with_stdio(0);
+    cin.tie(0);
+
+    float x;
+
+    cin >> x;
+
+    cout << round(x);
+
+    cout << flush;
+
+    return 0;
+}