Submission #929116

#	Time	Username	Problem	Language	Result	Execution time	Memory
929116		abcvuitunggio	Dungeons Game (IOI21_dungeons)	C++17	100 / 100	2609 ms	1921852 KiB

dungeons

#include "dungeons.h"
#include <bits/stdc++.h>
using namespace std;
const int base=6,sz=9,lim=1e7;
const long long INF=1e18;
int N,nxt[24][400001][sz+1],lg[lim+1];
long long mx[24][400001],mn[24][400001][sz],sum[24][400001][sz+1];
vector <int> S,P,ve={1};
void init(int n, vector <int> s, vector <int> p, vector <int> w, vector <int> l){
    N=n,S=s,P=p;
    for (int i=1;i<sz;i++)
        ve.push_back(ve.back()*base);
    memset(nxt,-1,sizeof(nxt));
    for (int i=2;i<=lim;i++)
        lg[i]=lg[i/2]+1;
    for (int i=0;i<n;i++){
        for (int j=0;j<sz;j++)
            if (s[i]<=ve[j]){
                nxt[0][i][j]=w[i];
                sum[0][i][j]=s[i];
                mn[0][i][j]=INF;
            }
            else{
                nxt[0][i][j]=l[i];
                sum[0][i][j]=p[i];
                mn[0][i][j]=s[i];
            }
        nxt[0][i][sz]=w[i];
        mx[0][i]=sum[0][i][sz]=s[i];
    }
    for (int j=1;j<24;j++){
        for (int i=0;i<n;i++)
            for (int k=0;k<=sz;k++){
                if (nxt[j-1][i][k]==-1)
                    continue;
                int u=nxt[j-1][i][k];
                nxt[j][i][k]=nxt[j-1][u][k];
                if (k<sz)
                    mn[j][i][k]=min(mn[j-1][i][k],mn[j-1][u][k]-sum[j-1][i][k]);
                else
                    mx[j][i]=max(mx[j-1][i],mx[j-1][u]-sum[j-1][i][k]);
                sum[j][i][k]=sum[j-1][i][k]+sum[j-1][u][k];
            }
    }
}
long long simulate(int x, int Z){
    int b=0,cur=0;
    long long z=Z;
    while (x<N){
        while (cur<sz&&ve[cur]<=z)
            cur++;
        int j=(b?cur-1:sz);
        for (int i=(b?lg[max(lim-z,0LL)]:23);i>=0;i--)
            if (nxt[i][x][j]!=-1)
                if ((b&&z<mn[i][x][j])||(!b&&z>=mx[i][x])){
                    z+=sum[i][x][j];
                    x=nxt[i][x][j];
                }
        b^=1;
    }
    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