Submission #870729

#	Time	Username	Problem	Language	Result	Execution time	Memory
870729		NoLove	Monkey and Apple-trees (IZhO12_apple)	C++14	0 / 100	1 ms	848 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 = 4e7 + 5;
struct Node {
    int val, lazy;
    int lc, rc; // left child, right child
    int lb, rb; // left border, right border
};
vector<Node> st(3);
ostream& operator<<(ostream& os, Node& v) {
    os << "[" << v.val << " {" << v.lb << " " << v.rb << "}" << 
                          " {" << v.lc << " " << v.rc << "}" << "]";
}
int id = 2;

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

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);
    } 
    int q, type, l, r;
    st[1].lb = 1; st[1].rb = 1e9 + 50;
    cin >> q;
    int c = 0;
    while (cin >> type >> l >> r) {
        l += c; r += c;
        if (type == 2) {
            // db(l, r)
            upd(st[1], l, r);
        } else {
            c = get(st[1], l, r);
            cout << c << "\n";
        }
    }
}

Compilation message (stderr)

apple.cpp: In function 'std::ostream& operator<<(std::ostream&, Node&)':
apple.cpp:28:1: warning: no return statement in function returning non-void [-Wreturn-type]
   28 | }
      | ^
apple.cpp: In function 'int32_t main()':
apple.cpp:92:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   92 |         freopen("hi.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100