제출 #930266

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
930266		vjudge1	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	0 / 100	1080 ms	92992 KiB

sortbooks

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ld long double
#define ull unsigned long long
#define pii pair<int,int>
#define pll pair<long long, long long>
#define fi first
#define se second
#define all(a) (a).begin(), (a).end()
#define pb push_back
#define lwb lower_bound
#define upb upper_bound

#define TASKNAME "NAME"

void init()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    ///freopen(TASKNAME".INP","r",stdin); freopen(TASKNAME".OUT","w",stdout);
}

const int SZ = 1e6+5;
const ll INF = INT_MAX / 2, MOD = 1e9+7, INFLL = 2e18;
const double epsilon = 1e-3;

struct Query
{
    int lo, hi, k, id;
    Query(int _lo = 0, int _hi = 0, int _k = 0, int _id = 0) : lo(_lo), hi(_hi), k(_k), id(_id) {}

    bool operator < (const Query& other) const
    {
        return hi < other.hi;
    }
} b[SZ];

struct SegTree
{
    int nodes[4*SZ], lazy[4*SZ];

    void down(int id)
    {
        int t = lazy[id];
        lazy[id] = 0;
        nodes[2*id] = max(nodes[2*id],t);
        lazy[2*id] = max(lazy[2*id], t);
        nodes[2*id+1] = max(nodes[2*id+1],t);
        lazy[2*id+1] = max(lazy[2*id+1],t);
    }

    void update(int id, int lo, int hi, int u, int v, int val)
    {
        if(lo > v || hi < u) return;
        if(lo >= u && hi <= v)
        {
            nodes[id] = max(nodes[id], val);
            lazy[id] = max(lazy[id], val);
            return;
        }
        down(id);
        int mid = (lo + hi) / 2;
        update(2*id, lo, mid, u, v, val);
        update(2*id+1, mid+1, hi, u, v, val);
    }

    int query(int id, int lo, int hi, int u, int v)
    {
        if(lo > v || hi < u) return 0;
        down(id);
        if(lo >= u && hi <= v) return nodes[id];
        int mid = (lo + hi) / 2;
        return max(query(2*id,lo,mid,u,v), query(2*id+1, mid+1, hi, u, v));
    }
} seg;

int n,m, a[SZ], res[SZ];
stack<int> st;

int main()
{
    init();
    cin >> n >> m;
    for(int i = 1; i <= n; i++)
    {
        cin >> a[i];
    }
    for(int i = 1; i <= m; i++)
    {
        cin >> b[i].lo >> b[i].hi >> b[i].k;
        b[i].id = i;
    }
    sort(b + 1, b + m + 1);
    int j = 1;
    st.push(0);
    for(int i = 1; i <= m; i++)
    {
        int lo = b[i].lo, hi = b[i].hi, k = b[i].k, id = b[i].id;
        while(j <= hi)
        {
            while(!st.size() > 1 && st.top() <= a[j]) st.pop();
            if(st.size() > 1)
            {
                int cur = st.top();
                st.pop();
                seg.update(1, 1, n, st.top() + 1, cur, a[j] + a[cur]);
                st.push(cur);
            }
            st.push(j);
            j++;
        }
        res[id] = (seg.query(1, 1, n, lo, hi) <= k ? 1 : 0);
    }
    for(int i = 1; i <= m; i++)
    {
        cout << res[i] << '\n';
    }
}

컴파일 시 표준 에러 (stderr) 메시지

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:102:30: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
  102 |             while(!st.size() > 1 && st.top() <= a[j]) st.pop();
      |                              ^
sortbooks.cpp:102:19: note: add parentheses around left hand side expression to silence this warning
  102 |             while(!st.size() > 1 && st.top() <= a[j]) st.pop();
      |                   ^~~~~~~~~~
      |                   (         )
sortbooks.cpp:102:30: warning: comparison of constant '1' with boolean expression is always false [-Wbool-compare]
  102 |             while(!st.size() > 1 && st.top() <= a[j]) st.pop();
      |                   ~~~~~~~~~~~^~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23