제출 #648398

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
648398		mychecksedad	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	0 / 100	3082 ms	262144 KiB

sortbooks

/* Author : Mychecksdead */
#include<bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long int ll;
typedef long double ld;
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define PI 3.1415926535
#define pb push_back
#define setp() cout << setprecision(15)
#define all(x) x.begin(), x.end()
#define oset tree<int, null_type,less_equal<int>, rb_tree_tag,tree_order_statistics_node_update>
#define debug(x) cerr << #x << " is " << x << '\n';
const int N = 1e6+100, M = 1e5+10, F = 2147483646, K = 20;


int n, m, a[N], dp[N][K];
vector<int> t[4*N];
void build(int l, int r, int k){
    if(l == r){
        t[k] = {a[l]};
        return;
    }
    int m = (l+r)>>1;
    build(l, m, k<<1);
    build(m+1, r, k<<1|1);
    merge(all(t[k<<1]), all(t[k<<1|1]), back_inserter(t[k]));
}
int find(int l, int r){
    int k = int(log2(r-l+1));
    return max(dp[l][k], dp[r - (1<<k) + 1][k]);
}
pair<int, int> larger(int l, int r, int ql, int qr, int k, int val){
    if(l > qr || r < ql) return {0, 0};
    if(ql <= l && r <= qr){
        return {(upper_bound(all(t[k]), val) - t[k].begin()), (lower_bound(all(t[k]), val) - t[k].begin())};
    }
    int m = (l + r) >> 1;
    auto v = larger(l, m, ql, qr, k<<1, val);
    auto p = larger(m+1, r, ql, qr, k<<1|1, val);
    return {v.first + p.first, v.second + p.second};
}
int q(int l, int r, int ql, int qr, int k, int val){
    if(l > qr || r < ql) return 0;
    if(ql <= l && r <= qr){
        int idx = lower_bound(all(t[k]), val) - t[k].begin();

        return (idx == 0 ? 0 : t[k][idx - 1]);
    }
    int m = (l + r) >> 1;
    return max(q(l, m, ql, qr, k<<1, val), q(m + 1, r, ql, qr, k<<1|1, val));
}
int query(int l, int r, int k){
    if(l == r){
        return 0;
    }
    int m = (l+r)>>1;
    int lb = 1, rb = MOD, med = MOD;
    while(lb <= rb){
        int mid = (lb +  rb) >> 1;
        auto v = larger(1, n, l, r, 1, mid);
        if(v.first < (m-l+1)){
            lb =  mid + 1;
        }else if(v.second > (m-l+1) + 1){
            rb = mid - 1;
        }else{
            med = mid;
            break;
        }
    }
    int mx = find(l, m);
    if(mx < med) mx = 0;
    return max({q(1, n, m + 1, r, 1, med) + mx, query(l, m, k), query(m + 1, r, k)});
}
void solve(){
    cin >> n >> m;
    for(int i = 1; i <= n; ++i) cin >> a[i];
    for(int i = 1; i <= n; ++i) dp[i][0] = a[i];
    for(int j = 1; j < K; ++j){
        for(int i = 1; i + (1<<j) <= n + 1; ++i){
            dp[i][j] = max(dp[i][j - 1], dp[i + (1<<(j-1))][j - 1]);
        }
    }
    build(1, n, 1);
    for(;m--;){
        int l, r, k; cin >> l >> r >> k;
        cout << (query(l, r, k) <= k) << '\n';
    }
}





int main(){
    cin.tie(0); ios::sync_with_stdio(0);
    int T = 1, aa;
    // cin >> T;aa=T;
    while(T--){
        // cout << "Case #" << aa-T << ": ";
        solve();
        cout << '\n';
    }
    return 0;
 
}

컴파일 시 표준 에러 (stderr) 메시지

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:99:16: warning: unused variable 'aa' [-Wunused-variable]
   99 |     int T = 1, aa;
      |                ^~

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