Submission #650067

#	Time	Username	Problem	Language	Result	Execution time	Memory
650067		boris_mihov	Bubble Sort 2 (JOI18_bubblesort2)	C++17	0 / 100	9034 ms	724 KiB

bubblesort2

#include "bubblesort2.h"
#include <algorithm>
#include <iostream>
#include <numeric>
#include <vector>

typedef long long llong;
const int MAXN = 500000 + 10;
const int INF  = 1e9;

int b[MAXN];
int a[MAXN], n;
int smaller[MAXN];
std::vector <int> ans;
int cnt;

void calc()
{
    for (int i = 1 ; i <= n ; ++i) b[i] = a[i];
    
    cnt = 0;
    bool sorted = false;
    while (!sorted)
    {
        sorted = true;
        for (int i = 1 ; i <= n-1 ; ++i)
        {
            if (b[i] > b[i + 1])
            {
                sorted = false;
                std::swap(b[i], b[i + 1]);
            }
        }

        cnt += !sorted;
    }
}

std::vector<int> countScans(std::vector<int> A,std::vector<int> X,std::vector<int> V)
{
    n = A.size();
    for (int i = 1 ; i <= n ; ++i) a[i] = A[i-1];

    ans.resize(X.size());
    for (int i = 0 ; i < X.size() ; ++i)
    {
        a[X[i] + 1] = V[i];
        calc();   
        ans[i] = cnt;
    }

    return ans;
}

Compilation message (stderr)

bubblesort2.cpp: In function 'std::vector<int> countScans(std::vector<int>, std::vector<int>, std::vector<int>)':
bubblesort2.cpp:45:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |     for (int i = 0 ; i < X.size() ; ++i)
      |                      ~~^~~~~~~~~~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 21
• Subtask 3: 0 / 22
• Subtask 4: 0 / 40