Submission #1081002

#	Time	Username	Problem	Language	Result	Execution time	Memory
1081002		raphaelp	Text editor (CEOI24_editor)	C++14	45 / 100	721 ms	63212 KiB

Main

#include <bits/stdc++.h>
using namespace std;
int main()
{
    long long N;
    cin >> N;
    long long debx, deby, finx, finy;
    cin >> debx >> deby >> finx >> finy;
    debx--, deby--, finx--, finy--;
    vector<long long> Tab(N);
    map<long long, long long> M;
    vector<long long> ys;
    for (long long i = 0; i < N; i++)
    {
        cin >> Tab[i];
        ys.push_back(Tab[i]);
    }
    if (N <= 1000)
    {
        ys.push_back(deby);
        ys.push_back(finy);
        long long buff = 0;
        sort(ys.begin(), ys.end());
        for (long long i = 0; i < ys.size(); i++)
            M[ys[i]] = buff++;
        deby = M[deby];
        finy = M[finy];
        for (long long i = 0; i < N; i++)
            Tab[i] = M[Tab[i]];
        vector<vector<long long>> occ(N, vector<long long>(N + 4));
        priority_queue<vector<long long>> PQ;
        PQ.push({0, debx, deby});
        while (!PQ.empty())
        {
            long long x = PQ.top()[1], y = PQ.top()[2], t = PQ.top()[0];
            PQ.pop();
            if (occ[x][y])
                continue;
            occ[x][y] = 1;
            if (x == finx && y == finy)
            {
                cout << -t;
                return 0;
            }
            if (y > 0)
                PQ.push({t - (ys[y] - ys[y - 1]), x, y - 1});
            if (y < Tab[x])
                PQ.push({t - (ys[y + 1] - ys[y]), x, y + 1});
            if (x > 0 && y == 0)
                PQ.push({t - 1, x - 1, Tab[x - 1]});
            if (x < N - 1 && y == Tab[x])
                PQ.push({t - 1, x + 1, 0});
            if (x < N - 1)
                PQ.push({t - 1, x + 1, min(y, Tab[x + 1])});
            if (x > 0)
                PQ.push({t - 1, x - 1, min(y, Tab[x - 1])});
        }
    }
    else
    {
        long long minn = abs(deby - finy) + abs(debx - finx);
        minn = min(minn, finy - 1 + N - finx + N - debx);
        minn = min(minn, abs((debx - 1) - finx) + Tab[0] - finy + deby);
        minn = min(minn, abs((debx + 1) - finx) + Tab[0] - deby + finy);
        cout << minn;
    }
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:24:33: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |         for (long long i = 0; i < ys.size(); i++)
      |                               ~~^~~~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 14 / 14
• Subtask 3: 26 / 26
• Subtask 4: 0 / 11
• Subtask 5: 0 / 44