Init

ACMOJ-1444.hpp

@@ -0,0 +1,72 @@
+#ifndef EVIL_HPP
+#define EVIL_HPP
+
+#include <cstring>
+#include <iostream>
+using namespace std;
+
+class Evil {
+ private:
+  int st, ed, val;
+  int *data = nullptr;
+
+ public:
+  // 构造函数
+  Evil(int __st = 0, int __ed = 0, int __val = 0) {
+    st = __st;
+    ed = __ed;
+    val = __val;
+    data = new int[ed - st + 1]();
+  }
+  Evil(const Evil &src) {
+    st = src.st;
+    ed = src.ed;
+    val = src.val;
+    data = new int[ed - st + 1]();
+    std::memmove(data, src.data, sizeof(int) * (ed - st + 1));
+  }
+  // 下标运算符重载
+  int &operator[](int idx) {
+    if (idx < st || idx > ed) return *data;
+    return *(data + idx - st);
+  }
+  // 赋值运算符重载
+  Evil &operator=(const Evil &src) {
+    delete[] data;
+    st = src.st;
+    ed = src.ed;
+    val = src.val;
+    data = new int[ed - st + 1]();
+    std::memmove(data, src.data, sizeof(int) * (ed - st + 1));
+    return *this;
+  }
+  // 前缀++重载
+  Evil &operator++() {
+    val++;
+    return *this;
+  }
+  // 后缀++重载
+  Evil operator++(int) {
+    Evil ret = *this;
+    val++;
+    return ret;
+  }
+  // 输出重载
+  friend std::ostream &operator<<(std::ostream &stream, const Evil &dat);
+  // 析构函数
+  ~Evil() { delete[] data; }
+
+  void Print() {
+    cout << val << " ";
+    for (int i = 0; i < ed - st + 1; ++i) cout << data[i] << " ";
+    cout << endl;
+  }
+};
+
+std::ostream &operator<<(std::ostream &stream, const Evil &dat) {
+  stream << dat.val;
+  for (int i = 0; i <= dat.ed - dat.st; i++) stream << ' ' << *(dat.data + i);
+  stream << std::endl;
+  return stream;
+}
+#endif  // EVIL_HPP