Submission #520155

#	Time	Username	Problem	Language	Result	Execution time	Memory
520155		shmad	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	0 / 100	534 ms	262144 KiB

sortbooks

#pragma GCC optimize("O3", "unroll-loops") // "Ofast"
#pragma GCC target("avx2", "bmi", "bmi2", "lzcnt", "popcnt") 

#include <bits/stdc++.h>

#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vvi = vt< vt<int> >;

const int N = 1e6 + 5, mod = 1e9 + 7, inf = 1e18 + 7, B = 500, LIM = (1ll << 60);
const double eps = 1e-6;

int n, m, w[N], st[N][21], lg[N];
vt<int> id[1001];

void precalc () {
	lg[1] = 0;
	for (int i = 2; i < N; i++) lg[i] = lg[i / 2] + 1;
 	for (int i = 1; i <= n; i++) st[i][0] = w[i];
 	for (int j = 1; j <= 20; j++) {
 		for (int i = 0; i + (1ll << j) <= n; i++) st[i][j] = max(st[i][j - 1], st[i + (1ll << (j - 1))][j - 1]);
 	}
}

int get (int l, int r) {
	int i = lg[r - l + 1];
	return max(st[l][i], st[r - (1ll << i) + 1][i]);
}

int gt (vt<int> a, int x) {
	auto it = upper_bound(all(a), x - 1);
	if (it == a.begin()) return -1;
	return (*--it);
}

void solve () {
	cin >> n >> m;
	vt<int> ans(m + 1, 1);
	for (int i = 1; i <= n; i++) cin >> w[i];
	precalc();
	for (int i = 1; i <= n; i++) id[w[i]].pb(i);
	for (int q = 1; q <= m; q++) {
		int l, r, k;
		cin >> l >> r >> k;
		for (int i = 1; i <= 10; i++) {
			if (id[i].empty()) continue;
			int pos = gt(id[i], r - 1);
			if (pos == -1) continue;
			if (l <= pos && pos <= r) {
				int x = get(l, pos);
				if (x > i && i + x > k) {
					ans[q] = 0;
					break;
				}
			}
		}
	}
	for (int i = 1; i <= m; i++) cout << ans[i] << '\n';
	cout << '\n';
}

bool testcases = 0;
                  
signed main() {
#ifdef ONLINE_JUDGE
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
#endif
    cin.tie(0) -> sync_with_stdio(0);
    int test = 1;
    if (testcases) cin >> test;
    for (int cs = 1; cs <= test; cs++) {
        solve();
    }
}

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