제출 #1057881

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1057881		vjudge1	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	64 / 100	311 ms	262144 KiB

sortbooks

#include <bits/stdc++.h>
using namespace std;
typedef int ll;
typedef long double ld;
#define pb push_back
#define pf push_front
#define fi first
#define se second
const ll mod = 1e9+7, mxn = 1e6+7;
struct node 
{
    vector<ll> v;
    ll mx = -mod, ans = -mod;
};
node merge(node const a, node const b)
{
    node c;
    c.mx = max(a.mx, b.mx);
    c.ans = max({a.ans, b.ans});
    ll p = lower_bound(b.v.begin(), b.v.end(), a.mx)-b.v.begin()-1;
    if (p >= 0) c.ans = max({c.ans,b.v[p]+a.mx});
    ll id_a = 0, id_b = 0;
    while (id_a < a.v.size() && id_b < b.v.size())
    {
        if (a.v[id_a] < b.v[id_b]) c.v.pb(a.v[id_a++]);
        else c.v.pb(b.v[id_b++]);
    } 
    while (id_a < a.v.size()) c.v.pb(a.v[id_a++]);
    while (id_b < b.v.size()) c.v.pb(b.v[id_b++]);
    return c;
}
vector<node> st(mxn<<2);
ll a[mxn], n, q, ans, f;
void build(ll id, ll l, ll r)
{
    if (l == r) {st[id].mx = a[l]; st[id].v = {a[l]}; return;}
    ll m = (r+l)>>1;
    build(id<<1,l,m); build(id<<1|1,m+1,r);
    st[id] = merge(st[id<<1], st[id<<1|1]);
}
void get(ll id, ll l, ll r, ll u, ll v)
{
    if (u <= l && r <= v)
    {
        ans = max({ans, st[id].ans});
        ll p = lower_bound(st[id].v.begin(), st[id].v.end(), f)-st[id].v.begin()-1;
        if (p >= 0) ans = max({ans, st[id].v[p]+f});
        f = max(f, st[id].mx);
        return ;
    }
    ll m = (r+l)>>1;
    if (v <= m) get(id<<1,l,m,u,v);
    else if (m+1 <= u) get(id<<1|1,m+1,r,u,v);
    else {get(id<<1,l,m,u,v); get(id<<1|1,m+1,r,u,v);}
}
signed main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    // freopen("test.inp","r",stdin); freopen("test.out","w",stdout); freopen("test.err","w",stderr);
    cin >> n >> q;
    for (ll i = 1; i <= n; i++) cin >> a[i];
    build(1,1,n);
    while (q--)
    {
        ll l, r, k; cin >> l >> r >> k; ans = 0; f = -mod; get(1,1,n,l,r);
        cout << (ans <= k) << '\n';
    }
}

컴파일 시 표준 에러 (stderr) 메시지

sortbooks.cpp: In function 'node merge(node, node)':
sortbooks.cpp:23:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     while (id_a < a.v.size() && id_b < b.v.size())
      |            ~~~~~^~~~~~~~~~~~
sortbooks.cpp:23:38: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     while (id_a < a.v.size() && id_b < b.v.size())
      |                                 ~~~~~^~~~~~~~~~~~
sortbooks.cpp:28:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     while (id_a < a.v.size()) c.v.pb(a.v[id_a++]);
      |            ~~~~~^~~~~~~~~~~~
sortbooks.cpp:29:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     while (id_b < b.v.size()) c.v.pb(b.v[id_b++]);
      |            ~~~~~^~~~~~~~~~~~

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