From 4607c827c0b0fe296f12dc4abad96f72c9d451cf Mon Sep 17 00:00:00 2001
From: Algor <1561601523@qq.com>
Date: Sun, 15 Oct 2023 21:22:44 +0800
Subject: [PATCH] problem(A1058): make public

---
 problems/A/A1058/.gitignore |  2 --
 problems/A/A1058/A1058.md   | 47 +++++++++++++++++++++++++++++++++++++
 problems/A/A1058/gen.py     | 15 ++++++++++++
 problems/A/A1058/std.cpp    |  9 +++++++
 4 files changed, 71 insertions(+), 2 deletions(-)
 delete mode 100644 problems/A/A1058/.gitignore
 create mode 100644 problems/A/A1058/A1058.md
 create mode 100644 problems/A/A1058/gen.py
 create mode 100644 problems/A/A1058/std.cpp

diff --git a/problems/A/A1058/.gitignore b/problems/A/A1058/.gitignore
deleted file mode 100644
index d6b7ef3..0000000
--- a/problems/A/A1058/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*
-!.gitignore
diff --git a/problems/A/A1058/A1058.md b/problems/A/A1058/A1058.md
new file mode 100644
index 0000000..102350b
--- /dev/null
+++ b/problems/A/A1058/A1058.md
@@ -0,0 +1,47 @@
+# 题目描述
+
+Algor 过生日啦，小朋友们欢聚一堂一起吃蛋糕！
+
+$n$ 个小朋友的面前有一块圆形的大蛋糕，正当 Algor 思考如何切蛋糕的时候，Eronano 提出了问题：“如果我们每个人都切一刀的话，最多能把蛋糕分成多少份呢？”。
+
+# 输入格式
+
+一个整数 $n$，表示小朋友的数量。
+
+# 输出格式
+
+一个整数，蛋糕最多能被分成多少份。
+
+# 输入输出样例
+
+```input1
+1
+```
+
+```output1
+2
+```
+
+```input2
+3
+```
+
+```output2
+7
+```
+
+```input3
+5
+```
+
+```output3
+16
+```
+
+# 说明/提示
+
+假设蛋糕是一个规则的圆，小朋友们的每一刀都将完整地切在圆的某一条弦上，必定会导致蛋糕的块数增加。
+
+对于 $80 \%$ 的测试样例，$1 \leq n \leq {10}^3$。
+
+对于全部的测试样例，$1 \leq n \leq {10}^5$。
diff --git a/problems/A/A1058/gen.py b/problems/A/A1058/gen.py
new file mode 100644
index 0000000..28eac98
--- /dev/null
+++ b/problems/A/A1058/gen.py
@@ -0,0 +1,15 @@
+from cyaron import *
+from random import randint
+CASES = 10
+
+for _t in range(1, CASES + 1):
+    io = IO(f"{_t}.in")
+    # ==============================
+    if _t <= 8:
+        io.input_writeln(randint(1, int(1e3)))
+    elif _t == 9:
+        io.input_writeln(int(1e5 - 1))
+    else:
+        io.input_writeln(int(1e5))
+    # ==============================
+    io.close()
diff --git a/problems/A/A1058/std.cpp b/problems/A/A1058/std.cpp
new file mode 100644
index 0000000..33bd9a2
--- /dev/null
+++ b/problems/A/A1058/std.cpp
@@ -0,0 +1,9 @@
+#include <iostream>
+using namespace std;
+int main()
+{
+    long long n;
+    cin >> n;
+    cout << (1+n)*n/2+1 << endl;
+    return 0;
+}