Submission #1115638

#	Time	Username	Problem	Language	Result	Execution time	Memory
1115638		vjudge1	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	17 / 100	549 ms	33756 KiB

sortbooks

#include <bits/stdc++.h>
#define ll long long 
#define pb push_back
#define pf push_front
#define F first
#define S second
#define all(v) (v).begin(),(v).end()
#define int long long

using namespace std;

const int maxn = 1e6 + 5;

const int mod = 1e9 + 7;

int n,a[maxn],m,b[maxn],c[maxn],d[maxn],e[maxn],t[maxn * 4];

void build(int v = 1, int tl = 1, int tr = n){
	if(tl == tr){
		t[v] = a[tl];
		return; 
	}
	
	int tm = (tl + tr) >> 1;
	
	build(v + v, tl, tm);
	build(v + v + 1, tm + 1, tr);
	
	t[v] = min(t[v + v], t[v + v + 1]);
}

int get(int l, int r, int v = 1, int tl = 1, int tr = n){
	if(tl > r || l > tr) return 1000000000;
	
	if(l <= tl && tr <= r) {
		return t[v];
	}
	
	int tm = (tl + tr) >> 1;
	
	return min(get(l,r,v+v,tl,tm), get(l,r,v+v+1,tm+1,tr));
}

void webbly_abi_spasibo(){
		
	cin >> n >> m;
	
	for(int i = 1; i <= n; i++){
		cin >> a[i];
	}
	
	bool ok1 = 1;
	
	for(int i = 1; i <= m; i++){
		cin >> b[i] >> c[i] >> d[i];
		if(d[i] >= get(b[i],c[i])) ok1 = 0;
	}
	
	if(n <= 5000 && m <= 5000){
		for(int i = 1; i <= m; i++){
			int l = b[i], r = c[i], val = d[i];
			
			int mx = a[l];
			
			bool ok = 1;
			
			for(int j = l + 1; j <= r; j++){
				if(mx > a[j]){
					if(mx + a[j] > val) {
						ok = 0;
						break;
					}
				}
				mx = max(mx, a[j]);
			}
			
			cout << ok << '\n';
			
		}
	}
	else if(ok1){
		for(int i = 2; i <= n; i++){
			if(a[i] < a[i - 1]){
				e[i] = 1;
			}
			e[i] += e[i-1];
		}
		
		for(int i = 1; i <= m; i++){
			int l = b[i], r = c[i], val = d[i];
			if(e[r] - e[l-1]){
				cout << "0\n";
			}
			else {
				cout << "1\n";
			}
		}
	}
		
}

signed main(){
//	
//	freopen("greedy.in", "r", stdin);
//	freopen("greedy.out", "w", stdout);
	
	ios_base::sync_with_stdio(0);
	cin.tie(0);
		
	int tt = 1;
	
	//cin >> tt;
	
	while(tt--){
		webbly_abi_spasibo();
	}
	
	return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'void webbly_abi_spasibo()':
sortbooks.cpp:90:28: warning: unused variable 'val' [-Wunused-variable]
   90 |    int l = b[i], r = c[i], val = d[i];
      |                            ^~~

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