제출 #870638

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
870638		NoLove	원숭이와 사과 나무 (IZhO12_apple)	C++14	0 / 100	0 ms	500 KiB

apple

/**
 *    author : Lăng Trọng Đạt
 *    created: 08-11-2023 
**/
#include <bits/stdc++.h>
using namespace std;
#ifndef LANG_DAT
#define db(...) ;
#endif // LANG_DAT
#define int int64_t
#define mp make_pair
#define f first
#define s second
#define pb push_back
#define all(v) (v).begin(), (v).end()
using pii = pair<int, int>;

const int MAXN = 2e5 + 5;
struct Node {
    int val, lazy;
    int lc, rc; // left child, right child
    int lb, rb; // left border, right border
} st[MAXN];
ostream& operator<<(ostream& os, Node& v) {
    os << "[" << v.val << " " << v.lb << " " << v.rb << "]";
}
int q, type, l, r;
int id = 2;

void extend(int v) {
    if (!st[v].lc) {
        int mid = (st[v].lb + st[v].rb) / 2;
        st[id].lb = st[v].lb;
        st[id].rb = mid;
        st[v].lc = id++;

        st[id].lb = mid + 1;
        st[id].rb = st[v].rb;
        st[v].rc = id++;
    }
}
void push(int v) {
    if (st[v].lazy) {
        if (st[v].lb < st[v].rb) {
            extend(v);
            st[st[v].lc].lazy = st[st[v].rc].lazy = 1;
        }
        st[v].val = st[v].rb - st[v].lb + 1;
        // db(st[v])
        st[v].lazy = 0;
    }
}
void upd(int v = 1) {
    push(v);
    if (st[v].lb > r or l > st[v].rb) return;
    else if (l <= st[v].lb && st[v].rb <= r) {
        st[v].lazy = 1;
    } else {
        int mid = (st[v].lb + st[v].rb) / 2;
        extend(v);
        upd(st[v].lc); upd(st[v].rc);
        push(st[v].lc); push(st[v].rc);
        st[v].val = st[st[v].lc].val + st[st[v].rc].val;
    }
}
int get(int v = 1) {
    push(v);
    if (st[v].lb > r or l > st[v].rb) return 0;
    else if (l <= st[v].lb && st[v].rb <= r) {
        // db(v, st[v])
        return st[v].val;
    } else {
        int mid = (st[v].lb + st[v].rb) / 2;
        extend(v);
        return get(st[v].lc) + get(st[v].rc);
    }
}

int32_t main() {
    cin.tie(0)->sync_with_stdio(0);
    if (fopen("hi.inp", "r")) {
        freopen("hi.inp", "r", stdin);
//        freopen("hi.out", "w", stdout);
    } 
    st[1].lb = 1; st[1].rb = 1e9;
    cin >> q;
    int c = 0;
    while (cin >> type >> l >> r) {
        // db(l, r)
        l += c; r += c;
        if (type == 2) {
            upd();
        } else {
            int tmp = get();
            cout << tmp << "\n";
            c += tmp;
        }
    }
}

컴파일 시 표준 에러 (stderr) 메시지

apple.cpp: In function 'std::ostream& operator<<(std::ostream&, Node&)':
apple.cpp:26:1: warning: no return statement in function returning non-void [-Wreturn-type]
   26 | }
      | ^
apple.cpp: In function 'void upd(int64_t)':
apple.cpp:59:13: warning: unused variable 'mid' [-Wunused-variable]
   59 |         int mid = (st[v].lb + st[v].rb) / 2;
      |             ^~~
apple.cpp: In function 'int64_t get(int64_t)':
apple.cpp:73:13: warning: unused variable 'mid' [-Wunused-variable]
   73 |         int mid = (st[v].lb + st[v].rb) / 2;
      |             ^~~
apple.cpp: In function 'int32_t main()':
apple.cpp:82:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |         freopen("hi.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

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