Submission #438986

#	Time	Username	Problem	Language	Result	Execution time	Memory
438986		jlallas384	Dungeons Game (IOI21_dungeons)	C++17	24 / 100	7136 ms	423688 KiB

dungeons

#include <bits/stdc++.h>
#include "dungeons.h"
using namespace std;
using ll = long long;
vector<vector<pair<int,ll>>> blw,bll;
int n;
bool st3 = true;
vector<vector<pair<int,ll>>> build(vector<int> nxt,vector<int> add){
    vector<vector<pair<int,ll>>> bl(n + 1,vector<pair<int,ll>>(30));
    for(int i = 0; i < n; i++){
        bl[i][0] = {nxt[i],add[i]};
    }
    bl[n][0].first = n;
    for(int j = 1; j < 30; j++){
        for(int i = 0; i <= n; i++){
            bl[i][j].first = bl[bl[i][j - 1].first][j - 1].first;
            bl[i][j].second = bl[i][j - 1].second + bl[bl[i][j - 1].first][j - 1].second;
        }
    }
    return bl;
}

void init(int _n, vector<int> s, vector<int> p, vector<int> w, vector<int> l){
    n = _n;
    blw = build(w,s);
    bll = build(l,p);
    for(int i = 0; i < n; i++){
        st3 &= s[i] == s[0];
    }
}

long long simulate(int x, int z){
    ll res = z;
    if(st3){
        for(int i = 29; i >= 0; i--){
            if(res + bll[x][i].second < blw[0][0].second){
                res += bll[x][i].second;
                x = bll[x][i].first;
            }
        }
        if(res < blw[0][0].second){
            res += bll[x][0].second;
            x = bll[x][0].first;
        }
        for(int i = 29; i >= 0; i--){
            if(blw[x][i].first != n){
                res += blw[x][i].second;
                x = blw[x][i].first;
            }
        }
        return res + blw[x][0].second;
    }
    while(x != n){
        if(res < blw[x][0].second){
            res += bll[x][0].second;
            x = bll[x][0].first;
        }else{
            res += blw[x][0].second;
            x = blw[x][0].first;
        }
    }
    return res;
}

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