Submission #1127766

#	Time	Username	Problem	Language	Result	Execution time	Memory
1127766		Mikael639	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++20	30 / 100	776 ms	10288 KiB

sortbooks

#include <bits/stdc++.h>

#define fi first
#define se second

#define For(i, a, b) for (int i = (a); i <= (b); ++i)
#define ForD(i, a, b) for (int i = (a); i >= (b); --i)
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define repD(i, n) for (int i = (n) - 1; i >= 0; --i)
#define coutE(x) {cout << x << '\n'; return;}
#define pb push_back
#define pf push_front

#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define bs binary_search
#define ub upper_bound
#define lb lower_bound

#define endl '\n'

#define db long double
#define ll long long
#define ii pair<int, int>
#define vi vector<int>
#define vii vector<ii>

using namespace std;

void file(string s){

    if (s.empty()) return;

    freopen((s + ".inp").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

template <class X, class Y>
	bool minimize(X &x, Y y){
		if (x > y) return x = y, 1;
		return 0;
	}

template <class X, class Y>
	bool maximize(X &x, Y y){
		if (x < y) return x = y, 1;
		return 0;
	}

const int N = 1e6 + 5;
int n, q, a[N];


namespace sub1{
    void solve(){
        while (q--){
            int l, r, k; cin >> l >> r >> k;
            set<int> st;
            bool res = 1;
            For(i, l, r){
                auto it = st.end();
                if (it != st.begin() && *(prev(it)) > a[i] &&  *(prev(it)) + a[i] > k){
                    res = 0;
                    break;
                }
                st.insert(a[i]);
            }
            cout << res << '\n';
        }
    }
}

namespace sub2{
    int pre[N];
    void solve(){
        For(i, 2, n) pre[i] = pre[i - 1] + (a[i] >= a[i - 1]);
        while (q--){
            int l, r, k; cin >> l >> r >> k;
            bool res = (l == r) || (pre[r] - pre[l] == r - l);
            cout << res << '\n';
        }
    }
}

signed main(){

	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);


	cin >> n >> q;
	For(i, 1, n) cin >> a[i];

    if (max(n, q) <= 5000) return sub1::solve(), 0;
    sub2::solve();

	return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'void file(std::string)':
sortbooks.cpp:34:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |     freopen((s + ".inp").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:35:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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