Submission #890374

#	Time	Username	Problem	Language	Result	Execution time	Memory
890374		vjudge1	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	64 / 100	193 ms	25016 KiB

sortbooks

//#pragma comment(linker, "/stack:200000000")
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <algorithm>
#include <stdio.h>
#include <fstream>
#include <unordered_map>
using namespace std;

typedef long long ll;
typedef long double ld;

#define int long long
#define all(x) x.begin(),x.end()
#define pb push_back
#define ent "\n"

const int maxn = (int)2e5 + 13;
const ll inf = (long long)1e18 + 20;
const int mod = (int)1e9 + 7;

int n,m;
int a[maxn];
int dp[maxn];
vector<pair<pair<int,int>,int>>g[maxn];
int t[maxn  *4];
int ans[maxn ];

void upd(int v,int tl,int tr,int pos,int x){
	if(tl == tr){
		t[v] = x;
		return;
	}
	int mid = (tl + tr) >> 1;
	if(pos <= mid)upd(v * 2,tl,mid,pos,x);
	else upd(v * 2 + 1,mid + 1,tr,pos,x);
	t[v] = max(t[v * 2],t[v * 2 + 1]);
}

int get(int v,int tl,int tr,int l,int r){
	if(l <= tl && tr <= r){
		return t[v];
	}
	if(l > tr || r < tl)return 0;
	int mid = (tl + tr) >> 1;
	return max(get(v * 2,tl,mid,l,r),get(v * 2 + 1,mid + 1,tr,l,r));
}

void solve(){
	cin >> n >> m;
	vector<int>v;
	for(int i = 1 ; i <= n ; i ++){
		cin >> a[i];
		while(v.size()){
			if(a[v.back()] <= a[i]){
				v.pop_back();
			}
			else{
				break;
			}
		}
		if(v.size()){
			dp[i] = v.back();
		}
		v.pb(i);
	}
	for(int i = 1 ; i <= m ; i ++){
		int l,r,w;cin >> l>>r >> w;
		g[r].pb({{l,w},i});
	}
	for(int i = 1 ; i <= n ; i ++){
		if(dp[i])upd(1,1,n,dp[i],a[dp[i]] + a[i]);
		for(auto to : g[i]){
			int l = to.first.first,w = to.first.second;
			int mx = get(1,1,n,l,i);
			if(mx > w){
				ans[to.second] = 1;
			}
		}
	}
	for(int i = 1 ; i <= m ; i ++){
		cout << (ans[i] ^ 1) << ent;
	}
}

signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int t = 1;
	//cin >> t;
	while(t --){
		solve();
	}
	return 0;
}

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