제출 #1019162

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1019162		blackslex	Monkey and Apple-trees (IZhO12_apple)	C++17	100 / 100	408 ms	232560 KiB

apple

#include<bits/stdc++.h>

using namespace std;

int q, rc, x, y, c;

struct node {
    int val;
    bool lz;
    node *l, *r;
    node() : val(val), l(nullptr), r(nullptr) {}
    node(int val) : val(val), l(nullptr), r(nullptr) {}
};

typedef node* pnode;
pnode rt = nullptr;

void push (int l, int r, pnode &cur) {
    if (!cur->lz) return;
    cur->val = r - l + 1;
    if (l < r) {
        if (!cur->l) cur->l = new node();
        if (!cur->r) cur->r = new node();
        cur->l->lz = cur->r->lz = 1;
    }
    cur->lz = 0;
}

void upd (int l, int r, pnode &cur, int tl, int tr) {
    if (!cur) cur = new node();
    push(l, r, cur);
    if (l > tr || r < tl) return;
    if (l >= tl && r <= tr) return cur->lz = 1, push(l, r, cur), void();
    int mid = (l + r) >> 1;
    upd(l, mid, cur->l, tl, tr);
    upd(mid + 1, r, cur->r, tl, tr);
    cur->val = (cur->l ? cur->l->val : 0) + (cur->r ? cur->r->val : 0);
}

int qr (int l, int r, pnode cur, int tl, int tr) {
    if (l > tr || r < tl || !cur) return 0;
    push(l, r, cur);
    if (l >= tl && r <= tr) return cur->val;
    int mid = (l + r) >> 1;
    return qr(l, mid, cur->l, tl, tr) + qr(mid + 1, r, cur->r, tl, tr);
}

int main() {
    scanf("%d", &q);
    while (q--) {
        scanf("%d %d %d", &rc, &x, &y);
        if (rc == 2) upd(-1e9, 1e9, rt, x + c, y + c);
        else printf("%d\n", c = qr(-1e9, 1e9, rt, x + c, y + c));
    }
}

컴파일 시 표준 에러 (stderr) 메시지

apple.cpp: In constructor 'node::node()':
apple.cpp:11:5: warning: 'node::val' is initialized with itself [-Winit-self]
   11 |     node() : val(val), l(nullptr), r(nullptr) {}
      |     ^~~~
apple.cpp: In function 'int main()':
apple.cpp:49:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |     scanf("%d", &q);
      |     ~~~~~^~~~~~~~~~
apple.cpp:51:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         scanf("%d %d %d", &rc, &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
apple.cpp: In constructor 'node::node()':
apple.cpp:11:18: warning: '*<unknown>.node::val' is used uninitialized in this function [-Wuninitialized]
   11 |     node() : val(val), l(nullptr), r(nullptr) {}
      |                  ^~~

• Subtask 1: 100 / 100