제출 #1279757

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1279757		swishy123	원숭이와 사과 나무 (IZhO12_apple)	C++20	100 / 100	377 ms	198120 KiB

apple

#include <bits/stdc++.h>

#define ll long long
#define pi pair<int, int>
#define pl pair<ll, ll>
#define x first
#define y second

const ll inf = 1e18;
const int def = 4e6+1;
using namespace std;

struct Node{
    int sum, lazy, tl, tr;
    int l, r;

    Node(int l, int r) : tl(l), tr(r), lazy(0), sum(0), l(-1), r(-1){} 
};

vector<Node> st;
void extend(int u){
    int tl = st[u].tl, tr = st[u].tr;
    int l = st[u].l, r = st[u].r;
    
    if (tl == tr) return;
    int mid = (tl + tr) / 2;

    if (l == -1){
        st[u].l = st.size();
        st.push_back(Node(tl, mid));
    }
    if (r == -1){
        st[u].r = st.size();
        st.push_back(Node(mid + 1, tr));
    }
}       
void push(int u){
    int lazy = st[u].lazy;
    int l = st[u].l, r = st[u].r;

    if (!lazy) return;
    if (l != -1){
        st[l].sum = st[l].tr - st[l].tl + 1;
        st[l].lazy = 1;
    }
    if (r != -1){
        st[r].sum = st[r].tr - st[r].tl + 1;
        st[r].lazy = 1;
    }
    st[u].lazy = 0;
}   

void update(int ql, int qr, int crr){
    if (ql > st[crr].tr || qr < st[crr].tl)
        return;
    if (st[crr].tl >= ql && st[crr].tr <= qr){
        st[crr].sum = st[crr].tr - st[crr].tl + 1;
        st[crr].lazy = 1;
        return;
    }
    extend(crr);
    push(crr);

    update(ql, qr, st[crr].l);
    update(ql, qr, st[crr].r);

    st[crr].sum = st[st[crr].l].sum + st[st[crr].r].sum;
}

int get(int ql, int qr, int crr){
    if (ql > st[crr].tr || qr < st[crr].tl)
        return 0;
    if (st[crr].tl >= ql && st[crr].tr <= qr)
        return st[crr].sum;
    extend(crr);
    push(crr);

    return get(ql, qr, st[crr].l) + get(ql, qr, st[crr].r);
}

void solve(){
    int n;
    cin >> n;

    st.push_back(Node(0, 1e9));
    int c = 0;

    for (int i = 0; i < n; i++){
        int d, l, r;
        cin >> d >> l >> r;
        
        l += c; r += c;
        if (d == 1){
            int res = get(l, r, 0);
            c = res;
            cout << res << endl;
        }
        else
            update(l, r, 0);
    }
}   

/*
*/

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    if (ifstream("input.txt").good()){
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout); 
    }

    int t;
    t = 1;
    
    while (t--){
        solve();
    }
}

컴파일 시 표준 에러 (stderr) 메시지

apple.cpp: In function 'int main()':
apple.cpp:111:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  111 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
apple.cpp:112:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  112 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100