Submission #857039

#	Time	Username	Problem	Language	Result	Execution time	Memory
857039		busamate	Floppy (RMI20_floppy)	C++17	0 / 100	24 ms	6868 KiB

floppy

#include <stdlib.h>
#include <string.h>

#include "floppy.h"

using namespace std;

void read_array(int subtask_id, const std::vector<int> &v)
{
    int N = v.size();
    string bits('0', 2 * N);

    int tart = 0;
    vector<int> pos;
    pos.clear();
    for (int i = 0; i < N; i++)
        pos.push_back(i);

    while (pos.size() > 1)
    {
        vector<int> uj;
        uj.clear();

        int pre = -1;
        bool ok = false;
        for (int i : pos)
        {
            if (pre == -1)
            {
                ok = true;
            }
            else if (v[pre] < v[i])
            {
                ok = true;
                bits[tart++] = '1';
            }
            else
            {
                if (ok)
                    uj.push_back(pre);
                ok = false;
                bits[tart++] = '0';
            }
            pre = i;
        }
        if (ok)
            uj.push_back(pre);
        pos = uj;
    }

    save_to_floppy(bits);
}

vector<int> kerd[40000];

std::vector<int> solve_queries(int subtask_id, int N,
                               const std::string &bits,
                               const std::vector<int> &aa, const std::vector<int> &bb)
{
    int Q = aa.size();
    std::vector<int> ans(Q);

    for (int i = 0; i < Q; i++)
    {
        kerd[bb[i]].push_back(i);
        if (aa[i] == bb[i])
            ans[i] = aa[i];
    }

    vector<int> pos;
    pos.clear();
    for (int i = 0; i < N; i++)
        pos.push_back(i);

    int tart = 0;
    while (pos.size() > 1)
    {
        vector<int> uj;
        uj.clear();
        int pre = -1;
        bool ok = false;
        for (int i : pos)
        {
            if (pre == -1)
            {
                ok = true;
            }
            else if (bits[tart++] == '0')
            {
                if (ok)
                    uj.push_back(pre);
                ok = false;
            }
            else
            {
                ok = true;
            }
            pre = i;
        }
        if (ok)
            uj.push_back(pre);
        pos = uj;

        int a = -1, b = -1;
        auto it = pos.begin();
        for (int i = 0; i < N; i++){
            if(it!=pos.end() && (*it)==i){
                a = b;
                b = i;
                it++;
            }
            for(int j : kerd[i]){
                if(a < aa[j] && aa[j] <= b)
                    ans[j] = b;
            }
        }
    }

    return ans;
}

Compilation message (stderr)

stub.cpp: In function 'void run2()':
stub.cpp:101:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  101 |     if (query_answers.size() != M) {
      |         ~~~~~~~~~~~~~~~~~~~~~^~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 21
• Subtask 3: 0 / 72