Submission #442978

#	Time	Username	Problem	Language	Result	Execution time	Memory
442978		JvThunder	Dungeons Game (IOI21_dungeons)	C++17	11 / 100	2348 ms	1457224 KiB

dungeons

#include "dungeons.h"
#include <bits/stdc++.h>
#define fir first
#define sec second
typedef long long ll;
using namespace std;

int N;
vector<int> S,P,W,L;

int base = 2;
const int nop = 31;
const int noa = 25;

ll jump[nop][noa][50005]; // 8^b,2^jump,pos
ll add[nop][noa][50005];
ll need[nop][noa][50005]; //beat all

void init(int n, vector<int> s, vector<int> p, vector<int> w, vector<int> l) 
{
	S = s; P = p; W = w; L = l; N = n;
	
	int tmp = 1;
	for(int bit=0;bit<nop;bit++)
	{
		int lim = tmp;
		
		for(int i=0;i<n;i++) 
		{
			if(s[i]<=lim) add[bit][0][i] = s[i], jump[bit][0][i] = w[i], need[bit][0][i] = s[i];
			else if(s[i]>base*lim) add[bit][0][i] = p[i], jump[bit][0][i] = l[i], need[bit][0][i] = 0;
			else add[bit][0][i] = 0, jump[bit][0][i] = i, need[bit][0][i] = 0;
		}
		need[bit][0][n] = 0, add[bit][0][n] = 0, jump[bit][0][n] = n;

		for(int i=1;i<noa;i++)
		{
			for(int j=0;j<=n;j++)
			{
				int nxt = jump[bit][i-1][j];
				add[bit][i][j] = add[bit][i-1][j] + add[bit][i-1][nxt];
				need[bit][i][j] = max(need[bit][i-1][j], need[bit][i-1][nxt]);
				jump[bit][i][j] = jump[bit][i-1][nxt];
			}
		}

		tmp *= base;
	}
	return;
}

ll simulate(int x, int z) 
{
	ll pos = x;
	ll str = z;
	
	ll tmp = 1;
	ll phase = 0;
	while(pos!=N && phase<nop)
	{
		tmp *= base;

		for(int i=noa-1;i>=0;i--)
		{
			if(need[phase][i][pos]<=str && str+add[phase][i][pos]<=tmp)
			{
				str += add[phase][i][pos]; 
				pos = jump[phase][i][pos]; 
			}
		}

		while(pos!=N && str<=tmp)
		{
			if(str>=S[pos]) str += S[pos], pos = W[pos];
			else str += P[pos], pos = L[pos];
		}

		phase++;
	}
	return str;
}

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