Submission #488142

#	Time	Username	Problem	Language	Result	Execution time	Memory
488142		yungyao	Dungeons Game (IOI21_dungeons)	C++17	13 / 100	126 ms	28092 KiB

dungeons

using namespace std;
#pragma GCC optimize("Ofast")
#include <iostream>
#include <algorithm>
#include <vector>
#include <utility>
#include <stack>
#include <queue>
#include <set>
#include <map>

typedef long long LL;
typedef pair<int,int> pii;
#define F first
#define S second
#define pb push_back
#define mkp make_pair
#define iter(x) x.begin() x.end()
#define REP(n) for (int __=n;__--;)
#define REP0(i,n) for (int i=0;i<n;++i)
#define REP1(i,n) for (int i=1;i<=n;++i)

const int maxn = 5e4+200,mod = 0;
const LL inf = 0;

pair <int,LL> lose[maxn][24];
int win[maxn][24],wrq;
int N;
void init(int n,vector <int> s,vector <int> p,vector <int> w,vector <int> l){
    wrq = s[0];
    N = n;
    REP0(i,24){
        win[n][i] = n;
        lose[n][i] = mkp(n,0);
    }
    REP0(i,n){
        win[i][0] = w[i];
        lose[i][0] = mkp(l[i],p[i]);
    }
    REP1(j,23){
        REP0(i,n){
            win[i][j] = win[win[i][j-1]][j-1];
            lose[i][j] = mkp(lose[lose[i][j-1].F][j-1].F,lose[i][j-1].S + lose[lose[i][j-1].F][j-1].S);
        }
    }
}

LL simulate(int x,int is){
    LL z = is;
    if (z < wrq){
        for (int i=24;i--;){
            if (z + lose[x][i].S < wrq and lose[x][i].F != N){
                z += lose[x][i].S;
                x = lose[x][i].F;
            }
        }
        z += lose[x][0].S;
        x = lose[x][0].F;
    }

    if (x == N) return z;

    int s = 0;
    for (int i=24;i--;){
        if (win[x][i] != N){
            x = win[x][i];
            s |= (1 << i);
        }
    }

    return z + (LL)wrq * (s+1);
}

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