Submission #442524

#	Time	Username	Problem	Language	Result	Execution time	Memory
442524		JovanB	Dungeons Game (IOI21_dungeons)	C++17	100 / 100	6439 ms	1786968 KiB

dungeons

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

using ll = long long;

const int MAXN = 400000;
const int LOG2 = 24;
const int LOG8 = 8;

const ll INF = 1000000000000000000LL;

ll dp[LOG8+1][MAXN+5][LOG2+1];
ll dod[LOG8+1][MAXN+5][LOG2+1];
int gde[LOG8+1][MAXN+5][LOG2+1];

int s[MAXN+5];
int pl[MAXN+5];
int win[MAXN+5];
int lose[MAXN+5];
int step8[MAXN+5];

int N;

void init(int n, std::vector<int> S, std::vector<int> P, std::vector<int> W, std::vector<int> L){
    N = n;
    for(int i=0; i<n; i++){
        s[i] = S[i];
        pl[i] = P[i];
        win[i] = W[i];
        lose[i] = L[i];
    }
    s[n] = 0;
    pl[n] = 0;
    win[n] = n;
    lose[n] = n;
    step8[0] = 1;
    for(int i=1; i<=LOG8; i++) step8[i] = 8*step8[i-1];
    for(int k=0; k<=LOG8; k++){
        for(int i=0; i<=n; i++){
            if(step8[k] >= s[i]){
                dp[k][i][0] = INF;
                dod[k][i][0] = s[i];
                gde[k][i][0] = win[i];
            }
            else{
                dp[k][i][0] = s[i] - 1;
                dod[k][i][0] = pl[i];
                gde[k][i][0] = lose[i];
            }
        }
        for(int j=1; j<=LOG2; j++){
            for(int i=0; i<=n; i++){
                int h = gde[k][i][j-1];
                ll mndp = dp[k][i][j-1];
                ll udod = dod[k][i][j-1];
                for(int times=1; times<2; times++){
                    mndp = min(mndp, dp[k][h][j-1] - udod);
                    udod += dod[k][h][j-1];
                    h = gde[k][h][j-1];
                }
                gde[k][i][j] = h;
                dod[k][i][j] = udod;
                dp[k][i][j] = max(mndp, -5LL);
            }
        }
    }
	return;
}

ll simuliraj(int x, ll z){
    if(x == N) return z;
    int k = 0;
    for(int j=0; j<=LOG8; j++){
        if(step8[j] <= z) k = j;
    }
    if(k == LOG8) return z + dod[k][x][20];
    for(int j=LOG2; j>=0; j--){
        if(dp[k][x][j] >= z){
            z += dod[k][x][j];
            x = gde[k][x][j];
        }
    }
    if(x == N) return z;
    if(z >= s[x]) return simuliraj(win[x], z + s[x]);
    return simuliraj(lose[x], z + pl[x]);
}

long long simulate(int x, int z) {
    return simuliraj(x, 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