Submission #2778477


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#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
#include <queue>
#include <map>
#include <random>
#include <cstdio>
#include <cstring>
#include <cmath>

// for i in f..<t {... : as Swift
#define forin(i, f, t) for(auto i = f; i < t; i++)

using namespace std;
using ll = long long;


int main() {
    ll n;
    cin >> n;
    vector<ll> a(n);
    for (auto i = 0; i < n; i++) {
        cin >> a[i];
        a[i] -= i;
    }
    sort(a.begin(), a.end());
    auto median = a[n / 2];
    auto median2 = a[n / 2 - 1];
    ll sum1 = 0;
    for (auto v : a)
        sum1 += abs(v - median);
    cerr << sum1 << median << endl;
    
    ll sum2 = 0;
    for (auto v : a)
        sum2 += abs(v - median2);
    cerr << sum2 << median2 << endl;
    
    cout << min(sum1, sum2) << endl;
}

Submission Info

Submission Time
Task C - Linear Approximation
User MatsuTaku
Language C++14 (GCC 5.4.1)
Score 300
Code Size 852 Byte
Status AC
Exec Time 93 ms
Memory 1792 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 300 / 300
Status
AC × 4
AC × 19
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt
All sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt, sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt, subtask_1_01.txt, subtask_1_02.txt, subtask_1_03.txt, subtask_1_04.txt, subtask_1_05.txt, subtask_1_06.txt, subtask_1_07.txt, subtask_1_08.txt, subtask_1_09.txt, subtask_1_10.txt, subtask_1_11.txt
Case Name Status Exec Time Memory
sample_01.txt AC 1 ms 256 KB
sample_02.txt AC 1 ms 256 KB
sample_03.txt AC 1 ms 256 KB
sample_04.txt AC 1 ms 256 KB
subtask_1_01.txt AC 1 ms 256 KB
subtask_1_02.txt AC 18 ms 512 KB
subtask_1_03.txt AC 14 ms 512 KB
subtask_1_04.txt AC 41 ms 1024 KB
subtask_1_05.txt AC 72 ms 1664 KB
subtask_1_06.txt AC 80 ms 1792 KB
subtask_1_07.txt AC 93 ms 1792 KB
subtask_1_08.txt AC 82 ms 1792 KB
subtask_1_09.txt AC 81 ms 1792 KB
subtask_1_10.txt AC 82 ms 1792 KB
subtask_1_11.txt AC 82 ms 1792 KB