Submission #826632

#	Time	Username	Problem	Language	Result	Execution time	Memory
826632		AbdelmagedNour	Dungeons Game (IOI21_dungeons)	C++17	100 / 100	4907 ms	1446992 KiB

dungeons

#include <bits/stdc++.h>
//#include "grader.cpp"
using namespace std;
#include "dungeons.h"
const int LOG=20;
typedef long long ll;
struct item{
	int to;
	ll earn=0;
	ll mn=0;
};
struct node{
	vector<item>jump;
	node(){
		jump.resize(LOG);
	}
};
vector<vector<node>>dp;
vector<int>_s,_p,_w,_l;
int _n;
void init(int N,vector<int>S,vector<int>P,vector<int>W,vector<int>L){
	_n=N;
	_s=S;
	_p=P;
	_w=W;
	_l=L;
	dp.resize(7);
	for(int z=0;z<7;z++){
		auto &v=dp[z];
		v.resize(_n+1);
		for(int i=0;i<_n;i++){
			if((1<<(4*z))>=_s[i]){
				v[i].jump[0].to=_w[i];
				v[i].jump[0].earn=_s[i];
				v[i].jump[0].mn=1e18;
			}else{
				v[i].jump[0].to=_l[i];
				v[i].jump[0].earn=_p[i];
				v[i].jump[0].mn=_s[i];
			}
		}
		for(int i=1;i<LOG;i++){
			for(int j=0;j<_n;j++){
				auto a=v[j].jump[i-1],b=v[v[j].jump[i-1].to].jump[i-1];
				if(a.to==_n)v[j].jump[i]=a;
				else{
					v[j].jump[i].to=b.to;
					v[j].jump[i].earn=a.earn+b.earn;
					v[j].jump[i].mn=min(a.mn,b.mn-a.earn);
				}
			}
		}
	}
	return;
}

ll simulate(int x, int Z) {
	long long z=Z;
	for(int j=0;j<7;j++){
        while(z<(1<<(4*(j+1)))){
            for(int i=LOG-1;i>=0;i--){
                if(z<dp[j][x].jump[i].mn){
                    z+=dp[j][x].jump[i].earn;
                    x=dp[j][x].jump[i].to;
                    if(x==_n)return z;
                }
            }
            if(z>=_s[x])z+=_s[x],x=_w[x];
            else z+=_p[x],x=_l[x];
            if(x==_n)return z;
        }
	}	
	return z;
}

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