Submission #439696

#	Time	Username	Problem	Language	Result	Execution time	Memory
439696		tutis	Dungeons Game (IOI21_dungeons)	C++17	63 / 100	5044 ms	1048580 KiB

dungeons

#include "dungeons.h"
#include <bits/stdc++.h>
using namespace std;
long long N;
long long mn[400002][19];
long long W[400002][19];
long long S[400002][19];
const int mxt = 13;
long long f(int x)
{
	long long r = 1;
	long long w = 1;
	while (x--)
	{
		w *= 4;
		r *= w;
	}
	return r;
}
int mn1[mxt][400002][19];
int mx1[mxt][400002][19];
int tp[mxt][400002][19];
int del[mxt][400002][19];
void init(int n, vector<int> s, vector<int> p, vector<int> w, vector<int> l) {
	N = n;
	for (int i = 0; i < s.size(); i++)
	{
		S[i][0] = s[i];
		mn[i][0] = s[i];
	}
	for (int i = 0; i < w.size(); i++)
		W[i][0] = w[i];
	mn[n][0] = -1e17;
	S[n][0] = 0;
	W[n][0] = n;
	for (int t = 1; t < 19; t++)
	{
		for (int i = 0; i <= n; i++)
		{
			mn[i][t] = max(mn[i][t - 1], mn[W[i][t - 1]][t - 1] - S[i][t - 1]);
			W[i][t] = W[W[i][t - 1]][t - 1];
			S[i][t] = S[i][t - 1] + S[W[i][t - 1]][t - 1];
		}
	}
	for (int x = 0; x < mxt; x++)
	{
		long long v = f(x);
		mn1[x][n][0] = -3e7;
		mx1[x][n][0] = 3e7;
		tp[x][n][0] = n;
		del[x][n][0] = 0;
		for (int i = 0; i < n; i++)
		{
			if (s[i] > v)
			{
				mn1[x][i][0] = -1e8;
				mx1[x][i][0] = s[i] - 1;
				tp[x][i][0] = l[i];
				del[x][i][0] = p[i];
			}
			else
			{
				mn1[x][i][0] = s[i];
				mx1[x][i][0] = 1e8;
				tp[x][i][0] = w[i];
				del[x][i][0] = s[i];
			}
		}
		for (int t = 1; t < 19; t++)
		{
			for (int i = 0; i <= n; i++)
			{
				int i_ = tp[x][i][t - 1];
				int del_ = del[x][i][t - 1];
				mn1[x][i][t] = max(mn1[x][i][t - 1], mn1[x][i_][t - 1] - del_);
				mx1[x][i][t] = min(mx1[x][i][t - 1], mx1[x][i_][t - 1] - del_);
				tp[x][i][t] = tp[x][i_][t - 1];
				del[x][i][t] = del[x][i][t - 1] + del[x][i_][t - 1];
				if (del[x][i][t] >= 2e8)
				{
					mn1[x][i][t] = mn1[x][i][t - 1];
					mx1[x][i][t] = mx1[x][i][t - 1];
					tp[x][i][t] = tp[x][i][t - 1];
					del[x][i][t] = del[x][i][t - 1];
				}
			}
		}
	}
}

long long simulate(int x, int z) {
	long long s = z;
	while (x != N)
	{
		if (s >= mn[x][0])
		{
			for (int t = 18; t >= 0; t--)
			{
				if (s >= mn[x][t])
				{
					s += S[x][t];
					x = W[x][t];
				}
				if (s < mn[x][0])
					break;
			}
		}
		for (int v = 0; v < mxt; v++)
		{
			if (s >= mn1[v][x][0] && s <= mx1[v][x][0])
				for (int t = 18; t >= 0; t--)
				{
					if (s >= mn1[v][x][t] && s <= mx1[v][x][t])
					{
						s += del[v][x][t];
						x = tp[v][x][t];
					}
				}
		}
	}
	return s;
}

Compilation message (stderr)

dungeons.cpp: In function 'void init(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
dungeons.cpp:26:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |  for (int i = 0; i < s.size(); i++)
      |                  ~~^~~~~~~~~~
dungeons.cpp:31:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |  for (int i = 0; i < w.size(); i++)
      |                  ~~^~~~~~~~~~

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