Submission #929101

#	Time	Username	Problem	Language	Result	Execution time	Memory
929101		abcvuitunggio	Dungeons Game (IOI21_dungeons)	C++17	100 / 100	5690 ms	1905100 KiB

dungeons

#include "dungeons.h"
#include <bits/stdc++.h>
using namespace std;
const int base=10,sz=9;
const long long INF=1e18;
int nxt[400001][24][sz+1];
long long mx[400001][24],mn[400001][24][sz],sum[400001][24][sz+1];
vector <int> S,P,ve={1};
void init(int n, vector <int> s, vector <int> p, vector <int> w, vector <int> l){
    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=0;i<n;i++){
        for (int j=0;j<sz;j++)
            if (s[i]<=ve[j]){
                nxt[i][0][j]=w[i];
                sum[i][0][j]=s[i];
                mn[i][0][j]=INF;
            }
            else{
                nxt[i][0][j]=l[i];
                sum[i][0][j]=p[i];
                mn[i][0][j]=s[i];
            }
        nxt[i][0][sz]=w[i];
        mx[i][0]=sum[i][0][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[i][j-1][k]==-1)
                    continue;
                int u=nxt[i][j-1][k];
                nxt[i][j][k]=nxt[u][j-1][k];
                if (k<sz)
                    mn[i][j][k]=min(mn[i][j-1][k],mn[u][j-1][k]-sum[i][j-1][k]);
                else
                    mx[i][j]=max(mx[i][j-1],mx[u][j-1]-sum[i][j-1][k]);
                sum[i][j][k]=sum[i][j-1][k]+sum[u][j-1][k];
            }
    }
}
long long simulate(int x, int Z){
    int b=0,cur=0;
    long long z=Z;
    while (nxt[x][0][0]!=-1){
        while (cur<ve.size()&&ve[cur]<=z)
            cur++;
        int j=(b?cur-1:sz);
        for (int i=(b&&z>10000000?-1:23);i>=0;i--)
            if (nxt[x][i][j]!=-1)
                if ((b&&z<mn[x][i][j])||(!b&&z>=mx[x][i])){
                    z+=sum[x][i][j];
                    x=nxt[x][i][j];
                }
        b^=1;
    }
    return z;
}

Compilation message (stderr)

dungeons.cpp: In function 'long long int simulate(int, int)':
dungeons.cpp:49:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |         while (cur<ve.size()&&ve[cur]<=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