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Submission #880535

# Submission time Handle Problem Language Result Execution time Memory
880535 2023-11-29T15:40:00 Z dubabuba Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++14
0 / 100
 3 ms 2136 KB 
#include <bits/stdc++.h>
using namespace std;

typedef vector<int> vi;
typedef pair<int, int> pii;
#define ff first
#define ss second

const int mxl = 15;
const int mxn = 5050;
vector<vi> sus(mxl, vi (mxn));
vector<vi> tmp(mxl, vi (mxn));
int a[mxn], n, m;

struct con {
	int ans, max;
	con() {ans = max = 0;}
} str[mxn * 4];

void ono_max(int &MAX, int CMP) { if(MAX < CMP) MAX = CMP;}
void ono_min(int &MIN, int CMP) { if(MIN > CMP) MIN = CMP;}

void build(int idx, int lvl, int tl, int tr) {
	if(tl == tr) {
		// cout << tl << ": " << a[tl] << '\n';
		sus[lvl][tl] = a[tl];
		str[idx].max = a[tl];
		str[idx].ans = 0;
		return;
	}

	int tm = (tl + tr) / 2;
	build(idx * 2 + 1, lvl + 1, tl, tm);
	build(idx * 2 + 2, lvl + 1, tm + 1, tr);

	int L = tl, R = tm + 1, i = tl;
	while(1) {
		if(L == tm + 1 && R == tr + 1) break;
		if(L == tm + 1) {
			sus[lvl][i] = sus[lvl + 1][R];
			i++, R++;
			continue;
		}
		if(R == tr + 1) {
			sus[lvl][i] = sus[lvl + 1][L];
			i++, L++;
			continue;
		}

		if(sus[lvl + 1][L] <= sus[lvl + 1][R]) {
			sus[lvl][i] = sus[lvl + 1][L];
			L++, i++;
		}
		else {
			sus[lvl][i] = sus[lvl + 1][R];
			ono_max(str[idx].ans, str[idx * 2 + 1].max + sus[lvl][i]);
			R++, i++;
		}
	}

	ono_max(str[idx].max, str[idx * 2 + 1].max);
	ono_max(str[idx].max, str[idx * 2 + 2].max);

	ono_max(str[idx].ans, str[idx * 2 + 1].ans);
	ono_max(str[idx].ans, str[idx * 2 + 2].ans);

	// cout << tl << ' ' << tr << ":\n";
	// for(int i = tl; i <= tr; i++)
	// 	cout << sus[lvl][i] << ' ';
	// cout << "- " << str[idx].max << ' ' << str[idx].ans << '\n';
}

pair<con, int> query(int idx, int lvl, int tl, int tr, int l, int r) {
	if(tl == l && r == tr) return {str[idx], lvl};
	int tm = (tl + tr) / 2;
	if(r <= tm) return query(idx * 2 + 1, lvl + 1, tl, tm, l, r);
	if(tm < l) return query(idx * 2 + 2, lvl + 1, tm + 1, tr, l, r);

	pair<con, int> L_qr = query(idx * 2 + 1, lvl + 1, tl, tm, l, tm);
	pair<con, int> R_qr = query(idx * 2 + 2, lvl + 1, tm + 1, tr, tm + 1, r);
	con ret;

	int L = l, R = tm + 1, i = l;
	vi &L_next = (L_qr.ss > 0) ? sus[L_qr.ss] : tmp[-L_qr.ss];
	vi &R_next = (R_qr.ss > 0) ? sus[R_qr.ss] : tmp[-R_qr.ss];

	while(1) {
		if(L == tm + 1 && R == tr + 1) break;
		if(L == tm + 1) {
			tmp[lvl][i] = R_next[R];
			i++, R++;
			continue;
		}
		if(R == tr + 1) {
			tmp[lvl][i] = L_next[L];
			i++, L++;
			continue;
		}

		if(L_next[L] <= R_next[R]) {
			tmp[lvl][i] = L_next[L];
			L++, i++;
		}
		else {
			tmp[lvl][i] = R_next[R];
			ono_max(ret.ans, L_qr.ff.max + tmp[lvl][i]);
			R++, i++;
		}
	}

	ono_max(ret.ans, L_qr.ff.ans);
	ono_max(ret.ans, R_qr.ff.ans);

	ono_max(ret.max, L_qr.ff.max);
	ono_max(ret.max, R_qr.ff.max);
	return {ret, -lvl};
}

int main() {
	cin >> n >> m;
	for(int i = 1; i <= n; i++)
		cin >> a[i];

	build(0, 0, 1, n);
	// for(int i = 1; i <= n; i++)
	// 	cout << sus[0][i] << ' ';

	// for(int i = 0; i < 5; i++) {
	// 	cout << "level: " << i << '\n';
	// 	for(int j = 1; j <= n; j++)
	// 		cout << sus[i][j] << ' ';
	// 	cout << '\n';
	// }

	while(m--) {
		int l, r, k;
		cin >> l >> r >> k;

		pair<con, bool> q = query(0, 0, 1, n, l, r);
		cout << (q.ff.ans <= k) << '\n';
	}
	return 0;
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1112 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Incorrect 1 ms 1116 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1112 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Incorrect 1 ms 1116 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 13.0

# Verdict Execution time Memory Grader output
1 Runtime error 3 ms 2136 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 2136 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1112 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Incorrect 1 ms 1116 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1112 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 2 ms 1116 KB Output is correct
4 Incorrect 1 ms 1116 KB Output isn't correct
5 Halted 0 ms 0 KB -