Submission #1070755

#	Time	Username	Problem	Language	Result	Execution time	Memory
1070755		c2zi6	Prisoner Challenge (IOI22_prison)	C++17	65 / 100	10 ms	1752 KiB

prison

#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define all(a) (a).begin(), (a).end()
#define replr(i, a, b) for (int i = int(a); i <= int(b); ++i)
#define reprl(i, a, b) for (int i = int(a); i >= int(b); --i)
#define rep(i, n) for (int i = 0; i < int(n); ++i)
#define mkp(a, b) make_pair(a, b)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<PII> VPI;
typedef vector<VI> VVI;
typedef vector<VVI> VVVI;
typedef vector<VPI> VVPI;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
typedef vector<VL> VVL;
typedef vector<VVL> VVVL;
typedef vector<VPL> VVPL;
template<class T> T setmax(T& a, T b) {if (a < b) return a = b; return a;}
template<class T> T setmin(T& a, T b) {if (a < b) return a; return a = b;}
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template<class T>
using indset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#include "prison.h"

struct QUERY {
    /*int type;*/
    int ind;
    int val;
    /*
     * type = 0
     * grel a-i arjeq@
     * type = 1
     * hamematel b-i arjeq@ a-i het
     */
};
bool operator<(const QUERY& a, const QUERY& b) {
    /*return make_tuple(a.type, a.ind, a.val) < make_tuple(b.type, b.ind, b.val);*/
    return make_tuple(a.ind, a.val) < make_tuple(b.ind, b.val);
}

int b = 0;
map<int, QUERY> decode;
map<QUERY, int> encode;
void add(QUERY x) {
    if (encode.count(x)) return;
    decode[b] = x;
    encode[x] = b;
    b++;
}

const int himq = 3;
int start;
void getstart(int n) {
    start = 0;
    while (n) {
        n /= himq;
        start++;
    }
    start--;
}

int get(int x, int i) {
    while (i--) x /= himq;
    return x % himq;
}

VVI ans;
void prisoner(int id, int x) {
    auto[ind, VAL] = decode[id];
    bool which = ind%2;
    ans[id][0] = which;
    if (which) {
        int valA = VAL;
        int valB = get(x, ind);
        if (valA < valB) {
            ans[id][x] = -1;
        } else if (valA > valB) {
            ans[id][x] = -2;
        } else {
            ind--;
            if (ind < 0) return;
            ans[id][x] = encode[{ind, get(x, ind)}];
        }
    } else {
        int valA = get(x, ind);
        int valB = VAL;
        if (valA < valB) {
            ans[id][x] = -1;
        } else if (valA > valB) {
            ans[id][x] = -2;
        } else {
            ind--;
            if (ind < 0) return;
            ans[id][x] = encode[{ind, get(x, ind)}];
        }
    }
}

VVI devise_strategy(int n) {
    getstart(n);
    add({start+1, 0});
    replr(ind, 0, start) {
        rep(v, himq) {
            add({ind, v});
        }
    }
    /*replr(ind, 0, start) {*/
    /*    add({0, ind, 0});*/
    /*    rep(v, himq) {*/
    /*        add({1, ind, v});*/
    /*    }*/
    /*}*/

    ans = VVI(b, VI(n+1));
    rep(i, b) rep(j, n+1) prisoner(i, j);
    /*cout << start << endl;*/

    return ans;

    int A, B;
    cin >> A >> B;
    int cur = 0;
    rep(i, 20) {
        cout << "ID: " << cur << endl;
        auto[ind, val] = decode[cur];
        cout << "grac e " << ind << " " << val << endl;
        int harc = (ans[cur][0] ? B : A);
        cout << "Harcrec qash@, stacav " << harc << endl;
        if (ans[cur][harc] == -1) {
            cout << "PATASXAN@ A" << endl;
            break;
        }
        if (ans[cur][harc] == -2) {
            cout << "PATASXAN@ B" << endl;
            break;
        }
        cur = ans[cur][harc];
    }

    return ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 55 / 90