ac!

.clang-format

@@ -77,7 +77,7 @@ BreakConstructorInitializersBeforeComma: false
 BreakConstructorInitializers: BeforeColon
 BreakAfterJavaFieldAnnotations: false
 BreakStringLiterals: true
-ColumnLimit:     80
+ColumnLimit:     100
 CommentPragmas:  '^ IWYU pragma:'
 QualifierAlignment: Leave
 CompactNamespaces: false

2023202/main.cpp

@@ -1,121 +1,47 @@
 #include <stdio.h>
 
-template <class E> class Node {
+struct Node{
-private:
+    int prev, next;
-    E content;
-    Node<E> *next;
-
-public:
-    Node(const E &_content) : content(_content), next(this){};
-    Node(const E &_content, Node<E> *nextPtr)
-        : content(_content), next(nextPtr){};
-    void setNext(Node<E> *_ptr) {
-        this->next = _ptr;
-    }
-    E &getContent() {
-        return this->content;
-    }
-    Node<E> *getNextPtr() {
-        return this->next;
-    }
 };
 
-template <class E> class Iterator {
+Node map[100000];
-private:
-    Node<E> *current;
-
-public:
-    Iterator(Node<E> *start) : current(start){};
-    E &peekNext() {
-        return this->current->getNextPtr()->getContent();
-    }
-    void next() {
-        this->current = this->current->getNextPtr();
-    }
-    E &peek() {
-        return this->current->getContent();
-    }
-    Node<E> *peekNode() {
-        return this->current;
-    }
-    void insertHere(const E &newItem) {
-        this->current->setNext(
-            new Node<E>(newItem, this->current->getNextPtr()));
-    }
-};
-
-template <class E> class List {
-private:
-    // int _length;
-    Node<E> head;
-
-public:
-    List(const E &dummyValue)
-        : head(Node<E>(dummyValue)){
-              // this->_length = 0;
-          };
-    void insert(const E &target, const E &newItem) {
-        Iterator<E> iter = Iterator<E>(&this->head);
-        // Remember to add a loop to stop at length!!;
-        while (iter.peek() != target) {
-            iter.next();
-        }
-        iter.insertHere(newItem);
-        // this->_length++;
-    }
-    void remove(const E &target) {
-        Iterator<E> iter = Iterator<E>(&this->head);
-        while (iter.peekNext() != target) {
-            iter.next();
-        }
-        Node<E> *toBeDeleted = iter.peekNode()->getNextPtr();
-        iter.peekNode()->setNext(toBeDeleted->getNextPtr());
-        delete toBeDeleted;
-        // this->_length--;
-    }
-    Iterator<E> iterate() {
-        return Iterator<E>(&this->head);
-    }
-};
 
 int main() {
-    List<int> aList(0);
+    map[0].prev = 1;
-    aList.insert(0, 1);
+    map[0].next = 1;
+    map[1].prev = 0;
+    map[1].next = 0;
     int n;
     int cmd, x, y;
     scanf("%d", &n);
     while (n) {
         scanf("%d %d", &cmd, &x);
-        switch (cmd) {
+        switch(cmd) {
-        case 1: {
+            case 1: {
-            scanf("%d", &y);
+                scanf("%d", &y);
-            aList.insert(x, y);
+                map[y].prev = x;
-            break;
+                map[y].next = map[x].next;
-        }
+                map[x].next = y;
-        case 2: {
+                map[map[y].next].prev = y;
-            Iterator<int> iter = aList.iterate();
+                break;
-            while (iter.peek() != x) {
+            }
-                iter.next();
+            case 2: {
+                printf("%d\n", map[x].next);
+                break;
+            }
+            case 3: {
+                map[map[x].prev].next = map[x].next;
+                map[map[x].next].prev = map[x].prev;
+                break;
             }
-            printf("%d\n", iter.peekNext());
-            break;
-        }
-        case 3: {
-            aList.remove(x);
-        }
         }
         n--;
     }
 
-    Iterator<int> iter = aList.iterate();
+    int cur = map[0].next;
-    iter.next();
+    while (cur != 0) {
-    while (true) {
+        printf("%d\n", cur);
-        int content = iter.peek();
+        cur = map[cur].next;
-        if (content == 0) {
-            break;
-        }
-        printf("%d\n", content);
-        iter.next();
     }
     return 0;
 }

2023203/main.cpp

@@ -0,0 +1,48 @@
+#include <stdio.h>
+// 创建一个栈，拿到一个数，与栈顶比较，如果比栈顶小，压栈（正在波峰向波谷下降）
+// 比栈顶大，弹栈并计数；和栈顶相同，计数并且压入。
+
+struct NumberNode {
+    int data;
+    int count;
+};
+
+
+long long totalPairs;
+NumberNode powers[500010];
+
+int main() {
+    int len = 1;
+    int N;
+    int input;
+    totalPairs = 0;
+    powers[0].data = 0;
+    powers[0].count = 0;
+    scanf("%d", &N);
+    scanf("%d", &powers[1].data);
+    powers[1].count = 1;
+    N--;
+    for (int i = 0; i < N; i++) {
+        scanf("%d", &input);
+        while (len != 0 && powers[len].data < input) {
+            totalPairs += powers[len].count;
+            len--;
+        }
+        if (len == 0 ) {
+            powers[1].data = input;
+            powers[1].count = 1;
+            len = 1;
+        } else {
+            if (powers[len].data == input) {
+                totalPairs += powers[len].count + (len > 1);
+                powers[len].count++;
+            }
+            else  {
+                totalPairs += 1;
+                powers[++len] = NumberNode {input, 1};
+            }
+        }
+    }
+    printf("%lld", totalPairs);
+    return 0;
+}

2023204/main.cpp

@@ -0,0 +1,101 @@
+#include <stdio.h>
+#include <vector>
+#define DEAD false
+#define ALIVE true
+// 'Natural count' is the name of the node when all the nodes in the tree is
+// alive. xxx_num denotes the count as the question described.
+
+int ans[200] = {0};
+long long dead_nodes_num[105] = {0};
+int total_dead_nodes = 0;
+long long target_nodes_num[105] = {0};
+int total_target_nodes = 0;
+long long max_spawned_num = 0;
+
+struct Layer {
+    long long start_num;
+    long long end_num;
+    std::vector<long long> dead_nodes;
+};
+
+Layer tree[150] = {0};
+
+void create_tree(long long start_num, long long prev_alive, int layer, int next_dead_node_ptr) {
+    tree[layer].start_num = start_num;
+    prev_alive *= 2;
+    tree[layer].end_num = start_num + prev_alive - 1;
+    while (next_dead_node_ptr < total_dead_nodes &&
+           dead_nodes_num[next_dead_node_ptr] <= tree[layer].end_num) {
+        tree[layer].dead_nodes.push_back(dead_nodes_num[next_dead_node_ptr++]);
+        prev_alive--;
+    }
+    if (prev_alive == 0 || tree[layer].end_num >= target_nodes_num[total_target_nodes - 1]) {
+        max_spawned_num = tree[layer].end_num;
+        return;
+    }
+
+    create_tree(tree[layer].end_num + 1, prev_alive, layer + 1, next_dead_node_ptr);
+}
+
+void find_ans(long long target, int layer) {
+    ans[layer] = target;
+    if (layer == 1) {
+        return;
+    }
+    long long count_in_layer = (target - tree[layer].start_num) / 2;
+    for (int i = 0; i < tree[layer - 1].dead_nodes.size(); i++) {
+        if (count_in_layer < tree[layer - 1].dead_nodes[i] - tree[layer - 1].start_num - i) {
+            find_ans(tree[layer - 1].start_num + i + count_in_layer, layer - 1);
+            return;
+        }
+    }
+    // til the end_num
+    find_ans(tree[layer - 1].start_num + tree[layer - 1].dead_nodes.size() + count_in_layer,
+             layer - 1);
+}
+
+int main() {
+    scanf("%d %d", &total_dead_nodes, &total_target_nodes);
+    for (int i = 0; i < total_dead_nodes; i++) {
+        scanf("%lld", &dead_nodes_num[i]);
+    }
+    for (int i = 0; i < total_target_nodes; i++) {
+        scanf("%lld", &target_nodes_num[i]);
+    }
+
+    tree[1].start_num = 1;
+    tree[1].end_num = 1;
+    if (dead_nodes_num[0] == 1) {
+        for (int i = 0; i < total_target_nodes; i++) {
+            if (target_nodes_num[i] == 1) {
+                printf("1\n"); //
+            }
+            else {
+                printf("0\n");
+            }
+        }
+        return 0;
+    }
+
+    create_tree(2, 1, 2, 0);
+
+    // printf("Max spawn: %lld\n", max_spawned_num);
+
+    for (int i = 0; i < total_target_nodes; i++) {
+        if (target_nodes_num[i] > max_spawned_num) {
+            printf("0\n");
+            continue;
+        }
+        int layer_pos = 1;
+        while (tree[layer_pos].end_num < target_nodes_num[i]) {
+            layer_pos++;
+        }
+        find_ans(target_nodes_num[i], layer_pos);
+        for (int j = 1; j <= layer_pos; j++) {
+            printf("%lld ", ans[j]);
+        }
+        printf("\n");
+    }
+
+    return 0;
+}