AtCoder Grand Contest 003

Submission #1365488

Source codeソースコード

#include <iostream>
#include <algorithm>

int LOGN = 20;

int v[100009], a[100009];

int main(){
    int n;
    std::cin >> n;

    for(int i = 1; i <= n; i ++)
        std::cin >> v[i];

    for(int i = 1; i <= n; i ++)
        a[i] = v[i];

    std::sort(a+1, a+n+1);

    int ans=0;
    for(int i = 1; i <= n; i ++){
        int rez = 0;
        for(int pas = 1 << LOGN; pas; pas >>= 1)
            if(rez + pas <= n && a[rez + pas] <= v[i])
                rez += pas;
        if((rez + i) % 2)
            ans ++;
    }

    std::cout << ans/2;

    return 0;
}

Submission

Task問題 C - BBuBBBlesort!
User nameユーザ名 Alexandru Petrescu
Created time投稿日時
Language言語 C++14 (GCC 5.4.1)
Status状態 AC
Score得点 600
Source lengthソースコード長 600 Byte
File nameファイル名
Exec time実行時間 69 ms
Memory usageメモリ使用量 1024 KB

Test case

Set

Set name Score得点 / Max score Cases
Sample - s1.txt,s2.txt
All 600 / 600 01.txt,02.txt,03.txt,04.txt,05.txt,06.txt,07.txt,08.txt,09.txt,10.txt,11.txt,12.txt,13.txt,14.txt,15.txt,16.txt,17.txt,18.txt,19.txt,20.txt,21.txt,22.txt,s1.txt,s2.txt

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
01.txt AC 68 ms 1024 KB
02.txt AC 68 ms 1024 KB
03.txt AC 68 ms 1024 KB
04.txt AC 69 ms 1024 KB
05.txt AC 52 ms 1024 KB
06.txt AC 52 ms 1024 KB
07.txt AC 51 ms 1024 KB
08.txt AC 44 ms 1024 KB
09.txt AC 42 ms 1024 KB
10.txt AC 42 ms 1024 KB
11.txt AC 41 ms 1024 KB
12.txt AC 44 ms 1024 KB
13.txt AC 43 ms 1024 KB
14.txt AC 51 ms 1024 KB
15.txt AC 51 ms 1024 KB
16.txt AC 53 ms 1024 KB
17.txt AC 51 ms 1024 KB
18.txt AC 1 ms 256 KB
19.txt AC 1 ms 256 KB
20.txt AC 1 ms 256 KB
21.txt AC 1 ms 256 KB
22.txt AC 1 ms 256 KB
s1.txt AC 1 ms 256 KB
s2.txt AC 1 ms 256 KB