Submission #5169416


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#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#define all(x) (x).begin(),(x).end()
//#pragma GCC optimize ("-O3")
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; }
//---------------------------------------------------------------------------------------------------
/*---------------------------------------------------------------------------------------------------
            ∧_∧  
      ∧_∧  (´<_` )  Welcome to My Coding Space!
     ( ´_ゝ`) /  ⌒i     
    /   \     | |     
    /   / ̄ ̄ ̄ ̄/  |  
  __(__ニつ/     _/ .| .|____  
     \/____/ (u ⊃  
---------------------------------------------------------------------------------------------------*/






int N, A[101010];
//---------------------------------------------------------------------------------------------------
void _main() {
	cin >> N;
	rep(i, 0, N) cin >> A[i];

	int plus = 0, minus = 0, zero = 0;
	rep(i, 0, N) {
		if (0 < A[i]) plus++;
		else if (A[i] < 0) minus++;
		else zero++;
	}

	ll ans = 0;
	if (minus % 2 == 0) {
		rep(i, 0, N) ans += abs(A[i]);
	}
	else if (0 < zero) {
		rep(i, 0, N) ans += abs(A[i]);
	}
	else {
		int mi = inf;
		rep(i, 0, N) chmin(mi, abs(A[i]));
		rep(i, 0, N) ans += abs(A[i]);
		ans -= mi * 2;
	}
	cout << ans << endl;
}

Submission Info

Submission Time
Task D - Flipping Signs
User hamayanhamayan
Language C++14 (GCC 5.4.1)
Score 400
Code Size 1849 Byte
Status AC
Exec Time 12 ms
Memory 640 KB

Judge Result

Set Name All Sample
Score / Max Score 400 / 400 0 / 0
Status
AC × 23
AC × 3
Set Name Test Cases
All sample_01, sample_02, sample_03, testcase_01, testcase_02, testcase_03, testcase_04, testcase_05, testcase_06, testcase_07, testcase_08, testcase_09, testcase_10, testcase_11, testcase_12, testcase_13, testcase_14, testcase_15, testcase_16, testcase_17, testcase_18, testcase_19, testcase_20
Sample sample_01, sample_02, sample_03
Case Name Status Exec Time Memory
sample_01 AC 1 ms 256 KB
sample_02 AC 1 ms 256 KB
sample_03 AC 1 ms 256 KB
testcase_01 AC 8 ms 512 KB
testcase_02 AC 4 ms 384 KB
testcase_03 AC 12 ms 640 KB
testcase_04 AC 5 ms 384 KB
testcase_05 AC 2 ms 256 KB
testcase_06 AC 11 ms 640 KB
testcase_07 AC 8 ms 512 KB
testcase_08 AC 9 ms 512 KB
testcase_09 AC 8 ms 512 KB
testcase_10 AC 12 ms 640 KB
testcase_11 AC 7 ms 512 KB
testcase_12 AC 5 ms 384 KB
testcase_13 AC 12 ms 640 KB
testcase_14 AC 12 ms 640 KB
testcase_15 AC 11 ms 640 KB
testcase_16 AC 12 ms 640 KB
testcase_17 AC 12 ms 640 KB
testcase_18 AC 7 ms 640 KB
testcase_19 AC 1 ms 256 KB
testcase_20 AC 12 ms 640 KB