diff --git a/atcoder/contest157/157A.cpp b/atcoder/contest157/157A.cpp
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+++ b/atcoder/contest157/157A.cpp
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+/*
+Problem Statement
+
+Takahashi wants to print a document with N pages double-sided, where two pages of data can be printed on one sheet of paper.
+At least how many sheets of paper does he need?
+
+Constraints
+N is an integer.
+1 ≤ N ≤ 100
+
+link - https://atcoder.jp/contests/abc157/tasks/abc157_a
+*/
+
+#include <bits/stdc++.h>
+using namespace std;
+
+int main()
+{
+  int n;
+  cin >> n;
+  if (n % 2 == 0)
+  {
+    cout << n / 2;
+  }
+  else
+  {
+    cout << (n + 1) / 2;
+  }
+}
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