[42] rounding

1 files changed, 41 insertions, 0 deletions

diff --git a/42/rounding.cc b/42/rounding.cc
new file mode 100644
index 0000000..b54d3f5
--- /dev/null
+++ b/42/rounding.cc
@@ -0,0 +1,41 @@
+#include <bits/stdc++.h>
+#include <utility>
+#include <vector>
+using namespace std;
+
+int main() {
+  ios::sync_with_stdio(false);
+  cin.tie(nullptr);
+  int n;
+  cin >> n;
+  double num;
+  int a;
+  int b;
+
+  vector<int> ans_1(n);
+  vector<int> ans_2(n);
+
+  for (int i = 0; i < n; ++i) {
+    cin >> num;
+    a = static_cast<int>(num);
+    b = static_cast<int>(num * 10) % 10;
+    if (b <= 4) {
+      ans_1[i] = ans_2[i] = a;
+    } else if (b == 5) {
+      ans_1[i] = a + 1;
+      if (a % 2 == 0) {
+        ans_2[i] = a;
+      } else {
+        ans_2[i] = a + 1;
+      }
+    } else if (b >= 6 && b <= 9) {
+      ans_1[i] = ans_2[i] = a + 1;
+    }
+  }
+  for (int i = 0; i < n; ++i) {
+    cout << ans_1[i] << (i != n - 1 ? " " : "\n");
+  }
+  for (int i = 0; i < n; ++i) {
+    cout << ans_2[i] << (i != n - 1 ? " " : "\n");
+  }
+}