Submission #1048483

#	Time	Username	Problem	Language	Result	Execution time	Memory
1048483		DorostWef	Dungeons Game (IOI21_dungeons)	C++17	24 / 100	7067 ms	255232 KiB

dungeons

#include "dungeons.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
#define F first
#define S second
#define mk make_pair
typedef pair <ll, ll> pii;
const int N = 400023, LG = 24;
int s[N], p[N], w[N], l[N], n;
long long m[N], a[N];
pair <int, pii> nx[N][LG];

void init(int nn, std::vector<int> ss, std::vector<int> pp, std::vector<int> ww, std::vector<int> ll) {
	n = nn;
	for (int i = 0; i < n; i++) {
		s[i] = ss[i];
		p[i] = pp[i];
		w[i] = ww[i];
		l[i] = ll[i];
	}
	m[n] = 0;
	a[n] = 0;
	l[n] = n;
	w[n] = n;
	for (int i = n - 1; i >= 0; i--) {
		a[i] = a[w[i]] + s[i];
		m[i] = max((long long)s[i], m[w[i]] - s[i]);
	}
	for (int i = 0; i <= n; i++) {
		nx[i][0].F = l[i];
		nx[i][0].S.F = s[i] - 1;
		nx[i][0].S.S = p[i];
	}
	for (int j = 1; j < LG; j++) {
		for (int i = 0; i <= n; i++) {
			int w = nx[i][j - 1].F;
			nx[i][j].F = nx[w][j - 1].F;
			nx[i][j].S.S = nx[i][j - 1].S.S + nx[w][j - 1].S.S;
			nx[i][j].S.F = min (nx[i][j - 1].S.F, nx[w][j - 1].S.F - nx[i][j - 1].S.S);
		}
	}
	return;
}

pair <int, long long> find (int x, ll z) {
	for (int i = LG - 1; i >= 0; i--) {
		if (z <= nx[x][i].S.F) {
			z += nx[x][i].S.S;
			x = nx[x][i].F;
		}
	}
	return {x, z};
}

ll ans (int x, ll z) {
	if (z >= m[x])
		return z + a[x];
	if (z >= s[x]) {
		z += s[x];
		x = w[x];
	} else {
		pair <int, int> p = find (x, z);
		z = p.S;
		x = p.F;
	}
	return ans (x, z);
}

long long simulate(int x, int z) {
	return ans (x, z);
}

• Subtask 1: 11 / 11
• Subtask 2: 0 / 26
• Subtask 3: 13 / 13
• Subtask 4: 0 / 12
• Subtask 5: 0 / 27
• Subtask 6: 0 / 11