Submission #826595

#	Time	Username	Problem	Language	Result	Execution time	Memory
826595		AbdelmagedNour	Dungeons Game (IOI21_dungeons)	C++17	24 / 100	2883 ms	425120 KiB

dungeons

#include <bits/stdc++.h>
//#include "grader.cpp"
using namespace std;
#include "dungeons.h"
const int LOG=25;
typedef long long ll;
struct item{
	int to;
	ll earn=0;
	int mn=0;
};
struct node{
	vector<item>jump;
	node(){
		jump.resize(13);
	}
};
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(LOG);
	for(int z=0;z<LOG;z++){
		auto &v=dp[z];
		v.resize(_n+1);
		for(int i=0;i<_n;i++){
			if((1<<z)>=_s[i]){
				v[i].jump[0].to=_w[i];
				v[i].jump[0].earn=_s[i];
				v[i].jump[0].mn=2e9;
			}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<13;i++){
			for(int j=0;j<_n;j++){
				//auto a=v[j].jump[i-1],b=v[a.to].jump[i-1],c=v[b.to].jump[i-1],d=v[c.to].jump[i-1];
                vector<item>a;a.reserve(4);
                a.push_back(v[j].jump[i-1]);
                for(int k=1;k<4;k++)a.push_back(v[a.back().to].jump[i-1]);
				ll sum=0,mn=1e18,to=-1;
                for(int k=0;k<4;k++){
                    mn=min(mn,(a[k].mn==int(2e9)?ll(1e18):a[k].mn)-sum);
                    sum+=a[k].earn;
                    to=a[k].to;
                    if(a[k].to==_n)break;
                }
                v[j].jump[i].to=to;
                v[j].jump[i].earn=sum;
                v[j].jump[i].mn=max(min(mn,ll(2e9)),-1LL);
			}
		}
	}
	return;
}

ll simulate(int x, int Z) {
	long long z=Z;
	for(int j=__lg(z);j<LOG;j=__lg(z)){
		for(int i=12;i>=0;i--){
			while(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: 0 / 26
• Subtask 3: 13 / 13
• Subtask 4: 0 / 12
• Subtask 5: 0 / 27
• Subtask 6: 0 / 11