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初赛模拟卷/assets/figures/笛卡尔树.svg new file mode 100644 index 0000000..5a1f8b5 --- /dev/null +++ b/2.Course/5.C++_Exam/NOI/CSP-J 初赛模拟卷/assets/figures/笛卡尔树.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/2.Course/5.C++_Exam/NOI/CSP-J 初赛模拟卷/答案解析/CSP-J初赛模拟卷·第01套-答案解析.md b/2.Course/5.C++_Exam/NOI/CSP-J 初赛模拟卷/答案解析/CSP-J初赛模拟卷·第01套-答案解析.md new file mode 100644 index 0000000..1c54dab --- /dev/null +++ b/2.Course/5.C++_Exam/NOI/CSP-J 初赛模拟卷/答案解析/CSP-J初赛模拟卷·第01套-答案解析.md @@ -0,0 +1,330 @@ +
+
+A. B 打开,其他都关上 B. AB 都打开,CD 都关上
+C. A 打开,其他都关上 D. D 打开,其他都关上
+
+( ) 14. 10000 以内,与 10000 互质的正整数有( )个。
+A. 2000 B. 4000 C. 6000 D. 8000
+
+( ) 15. 一些数字可以颠倒过来看,例如0、1、8颠倒过来还是本身,6颠倒过来是9, 9颠倒过来看还是6,其他数字颠倒过来都不构成数字。
+类似的,一些多位数也可以颠倒过来看,比如106颠倒过来是901。假设某个城市的车牌只由5位数字组成,每一位都可以取0到9。
+请问这个城市最多有多少个车牌倒过来恰好还是原来的车牌?( )
+A. 60 B. 125 C. 75 D. 100
+
+---
+
+#### **二、阅读程序(程序输入不超过数组或字符串定义的范围,判断题正确填 √,错误填 ×;共 18 小题,共计 42 分,各小题分值见题目)**
+
+**(1)**
+
+```cpp
+ 1 #include
+
+A. Dana, Michael, Eve B. Dana, Eve, Monica
+C. Michael, Eve, Jacob D. Micheal, Peter, Monica
+
+---
+
+#### **二、阅读程序(程序输入不超过数组或字符串定义的范围,判断题正确填 √,错误填 ×;共 18 小题,共计 41 分,各小题分值见题目)**
+
+**(1)**
+
+```cpp
+ 1 #include
+
+A. Dana, Michael, Eve B. Dana, Eve, Monica
+C. Michael, Eve, Jacob D. Micheal, Peter, Monica
+
+( ) 12. 为了统计一个非负整数的二进制形式中 1 的个数,代码如下:
+int CountBit(int x)
+{
+int ret = 0;
+while (x)
+{
+ret++;
+___________;
+}
+return ret;
+}
+则空格内要填入的语句是( )。
+A. `x >>= 1` B. `x &= x - 1` C. `x |= x >> 1` D. `x <<= 1`
+
+( ) 13. 新学期开学了,小胖想减肥,健身教练给小胖制定了两个训练方案。方案一:每次连续跑3公里可以消耗300千卡(耗时半小时);方案二:每次连续跑5公里可以消耗600千卡(耗时1小时)。小胖每周周一到周四能抽出半小时跑步,周五到周日能抽出一小时跑步。另外,教练建议小胖每周最多跑21公里,否则会损伤膝盖。
+请问如果小胖想严格执行教练的训练方案,并且不想损伤膝盖,每周最多通过跑步消耗多少千卡?( )
+A. 3000 B. 2500 C. 2400 D. 2520
+
+( ) 14. 有 10 个顶点的无向图至少应该有( )条边才有可能构成连通图。
+A. 9 B. 10 C. 11 D. 12
+
+( ) 15. Linux下可执行文件的默认扩展名为( )。
+A. exe B. com C. dll D. 以上都不是
+
+---
+
+#### **二、阅读程序(程序输入不超过数组或字符串定义的范围,判断题正确填 √,错误填 ×;共 12 小题,共计 27 分,各小题分值见题目)**
+
+**(1)**
+
+```cpp
+ 1 #include