Submission #1380778


Source Code Expand

#include <bits/stdc++.h>

using namespace std;

#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
#define fi first
#define se second

template<typename A, typename B> inline bool chmax(A &a, B b) { if (a<b) { a=b; return 1; } return 0; }
template<typename A, typename B> inline bool chmin(A &a, B b) { if (a>b) { a=b; return 1; } return 0; }

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<int, pll> P;
const ll INF = 1ll<<30;
const ll MOD = 1000000007;
const double EPS  = 1e-10;

int N;
int a[112345];

int main() {
	cin >> N;
	REP(i, N) scanf("%d", a + i);
	
	vector<int> cx;
	REP(i, N) cx.push_back(a[i]);
	sort(ALL(cx));
	REP(i, N) a[i] = lower_bound(ALL(cx), a[i]) - cx.begin();
	
	vector<int> v[2];
	REP(i, N) {
		if (i & 1) v[1].push_back(a[i]);
		else v[0].push_back(a[i]);
	}
	
	int even = 0, odd = 0;
	REP(i, v[0].size()) if (v[0][i] & 1) even++;
	REP(i, v[1].size()) if (v[1][i] & 1 == 0) odd++;
	
	cout << abs(even - odd) << endl;
	
	return 0;
}

Submission Info

Submission Time
Task C - BBuBBBlesort!
User tkmst201
Language C++14 (GCC 5.4.1)
Score 600
Code Size 1107 Byte
Status AC
Exec Time 30 ms
Memory 1784 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:27:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  REP(i, N) scanf("%d", a + i);
                              ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 600 / 600
Status
AC × 2
AC × 24
Set Name Test Cases
Sample s1.txt, s2.txt
All 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
Case Name Status Exec Time Memory
01.txt AC 30 ms 1784 KB
02.txt AC 30 ms 1784 KB
03.txt AC 30 ms 1784 KB
04.txt AC 30 ms 1784 KB
05.txt AC 28 ms 1784 KB
06.txt AC 28 ms 1784 KB
07.txt AC 28 ms 1784 KB
08.txt AC 18 ms 1784 KB
09.txt AC 18 ms 1784 KB
10.txt AC 17 ms 1784 KB
11.txt AC 17 ms 1784 KB
12.txt AC 18 ms 1784 KB
13.txt AC 18 ms 1784 KB
14.txt AC 28 ms 1784 KB
15.txt AC 28 ms 1784 KB
16.txt AC 28 ms 1784 KB
17.txt AC 28 ms 1784 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