Submission #1065511

#	Time	Username	Problem	Language	Result	Execution time	Memory
1065511		j_vdd16	Dungeons Game (IOI21_dungeons)	C++17	11 / 100	7067 ms	224752 KiB

dungeons

#include "dungeons.h"

#include <algorithm>
#include <bitset>
#include <cstdint>
#include <cstring>
#include <iostream>
#include <limits.h>
#include <math.h>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>

//#define int long long
#define ll long long
#define loop(X, N) for(int X = 0; X < (N); X++)
#define all(V) V.begin(), V.end()
#define rall(V) V.rbegin(), V.rend()

using namespace std;

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<bool> vb;
typedef vector<vector<bool>> vvb;

typedef uint64_t u64;
typedef int64_t i64;

int n;
constexpr int POW = 24;

vi lift[POW];
vector<pair<ll, ll>> maxValues[POW];

vector<ll> s, p;
vi w, l;

vector<pair<ll, ll>> minToEscape;

void init(int _n, std::vector<int> _s, std::vector<int> _p, std::vector<int> _w, std::vector<int> _l) {
    n = _n;
    w = _w;
    l = _l;

    w.push_back(n);
    l.push_back(n);

    //set<ll> strengths;
    for (int x : _s) {
        s.push_back(x);
        //strengths.insert(x);
    }
    for (int x : _p) p.push_back(x);

    s.push_back(0);
    p.push_back(0);

    minToEscape = vector<pair<ll, ll>>(n + 1);
    for (int i = n - 1; i >= 0; i--) {
        auto [nextMin, nextGain] = minToEscape[w[i]];

        if (s[i] * 2 >= nextMin) {
            minToEscape[i].first = s[i];
        }
        else {
            minToEscape[i].first = nextMin - s[i];
        }

        minToEscape[i].second = nextGain + s[i];
    }

    maxValues[0] = vector<pair<ll, ll>>(n + 1);
    lift[0] = vi(n + 1);
    loop(i, n + 1) {
        lift[0][i] = l[i];
        maxValues[0][i] = { p[i], s[i] };
    }

    for (int pow = 1; pow < POW; pow++) {
        maxValues[pow] = vector<pair<ll, ll>>(n + 1);
        lift[pow] = vi(n + 1);

        loop(i, n + 1) {
            auto [gain, maxValue] = maxValues[pow - 1][i];
            
            int next = lift[pow - 1][i];
            lift[pow][i] = lift[pow - 1][next];

            auto [nextGain, nextMaxValue] = maxValues[pow - 1][next];

            maxValues[pow][i].first = gain + nextGain;
            maxValues[pow][i].second = min(maxValue, nextMaxValue - gain);
        }
    }
    
	return;
}

long long simulate(int x, int _z) {
    ll z = _z;
    
    // while (x != n) {
    //     for (int pow = POW - 1; pow >= 0; pow--) {
    //         if (z < maxValues[pow][x].second) {
    //             z += maxValues[pow][x].first;
    //             x = lift[pow][x];
    //         }
    //     }

    //     if (x == n) break;

    //     if (z >= minToEscape[x].first) {
    //         z += minToEscape[x].second;
    //         x = n;

    //         break;
    //     }

    //     z += s[x];
    //     x = w[x];
    // }

    while (x != n) {
        if (z >= minToEscape[x].first) {
            z += minToEscape[x].second;
            x = n;

            break;
        }

        if (z >= s[x]) {
            z += s[x];
            x = w[x];
        }
        else {
            z += p[x];
            x = l[x];
        }
    }

	return z;
}

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