Submission #826525

#	Time	Username	Problem	Language	Result	Execution time	Memory
826525		arnold518	Dungeons Game (IOI21_dungeons)	C++17	63 / 100	4032 ms	885840 KiB

dungeons

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

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 5e4;
const ll INF = 1e18;

int N;
int S[MAXN+10], P[MAXN+10], W[MAXN+10], L[MAXN+10];

ll A[MAXN+10][30][30], B[MAXN+10][30][30];
int C[MAXN+10][30][30];

void init(int _N, vector<int> _S, vector<int> _P, vector<int> _W, vector<int> _L)
{
	N=_N;
	for(int i=1; i<=N; i++)
	{
		S[i]=_S[i-1]; P[i]=_P[i-1];
		W[i]=_W[i-1]+1; L[i]=_L[i-1]+1;
	}

	for(int i=0; i<=23; i++)
	{
		for(int j=1; j<=N; j++)
		{
			if(S[j]<(1<<i)) A[j][0][i]=S[j], B[j][0][i]=(1<<(i+1)), C[j][0][i]=W[j];
			else if(S[j]<(1<<(i+1))) A[j][0][i]=P[j], B[j][0][i]=min((1<<(i+1)), S[j]), C[j][0][i]=L[j];
			else A[j][0][i]=P[j], B[j][0][i]=(1<<(i+1)), C[j][0][i]=L[j];
			//if(i<=5) printf("%d %d : %lld %lld %d\n", i, j, A[j][0][i], B[j][0][i], C[j][0][i]);
		}
		A[N+1][0][i]=0, B[N+1][0][i]=0; C[N+1][0][i]=N+1;

		for(int j=1; j<=25; j++)
		{
			for(int k=1; k<=N+1; k++)
			{
				C[k][j][i]=C[C[k][j-1][i]][j-1][i];
				A[k][j][i]=A[k][j-1][i]+A[C[k][j-1][i]][j-1][i];
				B[k][j][i]=min(B[k][j-1][i], B[C[k][j-1][i]][j-1][i]-A[k][j-1][i]);
			}
		}
	}

	for(int i=1; i<=N; i++) A[i][0][24]=S[i], B[i][0][24]=INF, C[i][0][24]=W[i];
	A[N+1][0][24]=0, B[N+1][0][24]=0; C[N+1][0][24]=N+1;
	for(int j=1; j<=25; j++)
	{
		for(int k=1; k<=N+1; k++)
		{	
			C[k][j][24]=C[C[k][j-1][24]][j-1][24];
			A[k][j][24]=A[k][j-1][24]+A[C[k][j-1][24]][j-1][24];
			B[k][j][24]=min(B[k][j-1][24], B[C[k][j-1][24]][j-1][24]-A[k][j-1][24]);
		}
	}
}

ll simulate(int now, int _x)
{
	now++;
	ll x=_x;

	for(int i=0; i<=24; i++)
	{
		if(x>=(1<<(i+1))) continue;
		for(int j=25; j>=0; j--)
		{
			if(x<B[now][j][i])
			{
				x+=A[now][j][i];
				now=C[now][j][i];
			}
		}
		if(now>N) break;
		if(x<(1<<(i+1)))
		{
			if(x>=S[now]) x+=S[now], now=W[now];
			else x+=P[now], now=L[now];
		}
		//printf("%d : %d %lld\n", i, now, x);
		assert(x>=(1<<(i+1)));
	}
	return x;
}

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