Submission #222581

#	Time	Username	Problem	Language	Result	Execution time	Memory
222581		VEGAnn	Vision Program (IOI19_vision)	C++14	52 / 100	68 ms	6004 KiB

vision

#include <bits/stdc++.h>
#include "vision.h"
#define all(x) x.begin(),x.end()
#define sz(x) ((int)x.size())
#define pii pair<int,int>
#define ft first
#define sd second
#define MP make_pair
#define PB push_back
using namespace std;
const int N = 100100;
vector<int> vc, res, ids;
int n, m;

bool ok(int x, int y){
    return (x >= 0 && y >= 0 && x < n && y < m);
}

mt19937 rnd(chrono::system_clock().now().time_since_epoch().count());

void construct_network(int H, int W, int K) {
    n = H; m = W;
    res.clear();

    if (max(H, W) > 100 && min(W, H) > 1){
        vc.clear();

        int i = 0, j = 0;
        int x = 0, y = -K;

        while (x != i - K){
            if (ok(x, y))
                vc.PB(x * m + y);

            x--; y++;
        }

        while (x != i){
            if (ok(x, y))
                vc.PB(x * m + y);

            x++; y++;
        }

        while (x != i + K){
            if (ok(x, y))
                vc.PB(x * m + y);

            x++; y--;
        }

        while (x != i){
            if (ok(x, y))
                vc.PB(x * m + y);

            x--; y--;
        }

        if (!sz(vc)) {
            add_and({0});
            return;
        }

        int id = add_or(vc);
        add_and({id, i * m + j});

        return;
    }

    ids.clear();

    for (int i = 0; i < n * m; i++)
        ids.PB(i);

    shuffle(all(ids), rnd);

    int kol = 0;

    for (int it = 0; it < n * m; it++){
        int i = ids[it] / m, j = ids[it] % m;

        vc.clear();

        int x = i, y = j - K;

        while (x != i - K){
            if (ok(x, y))
                vc.PB(x * m + y);

            x--; y++;
        }

        while (x != i){
            if (ok(x, y))
                vc.PB(x * m + y);

            x++; y++;
        }

        while (x != i + K){
            if (ok(x, y))
                vc.PB(x * m + y);

            x++; y--;
        }

        while (x != i){
            if (ok(x, y))
                vc.PB(x * m + y);

            x--; y--;
        }

        if (!sz(vc)) continue;

        int id = add_or(vc);
        res.PB(add_and({id, i * m + j}));

        kol += 2;

        if (kol + 3 > 10000)
            break;
    }

    add_or(res);
}

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 0 / 15
• Subtask 5: 12 / 12
• Subtask 6: 8 / 8
• Subtask 7: 0 / 14
• Subtask 8: 0 / 19