CSES - Leirikisa 6.3.2017 - Results
Submission details
Task:Aitaus
Sender:Laakeri
Submission time:2017-03-06 16:38:35 +0200
Language:C++
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#10.04 s1details
#20.05 s1details
#30.04 s1details
#40.04 s1details
#50.04 s1details
#60.05 s2details
#70.04 s2details
#80.04 s2details
#90.03 s2details
#100.04 s2details
#110.05 s3details
#120.06 s3details
#130.05 s3details
#140.07 s3details
#150.07 s3details

Code

#include <bits/stdc++.h>
#define F first
#define S second
using namespace std;
typedef long long ll;

ll s[101010];

ll v=0;

ll sum(int a, int b){
	if (a==0) return s[b];
	return s[b]-s[a-1];
}

ll a[101010];

void go(int l, int r){
	if (l>=r) return;
	ll le=sum(l, r);
	v+=le;
	int mi=l;
	int ma=r;
	while (mi<=ma){
		int mid=(mi+ma)/2;
		if (sum(l, mid)*2ll<=le){
			mi=mid+1;
		}
		else{
			ma=mid-1;
		}
	}
	if (mi==r) mi=r-1;
	go(l, mi);
	go(mi+1, r);
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin>>n;
	for (int i=0;i<n;i++){
		cin>>a[i];
	}
	sort(a, a+n);
	for (int i=0;i<n;i++){
		s[i]=a[i];
		if (i) s[i]+=s[i-1];
	}
	go(0, n-1);
	cout<<v<<endl;
}

Test details

Test 1

Group: 1

Verdict:

input
10
1 1 1 1 1 1 1 1 1 1

correct output
34

user output
36

Test 2

Group: 1

Verdict:

input
10
1000 1000 1000 1000 1000 1000 ...

correct output
34000

user output
36000

Test 3

Group: 1

Verdict:

input
10
713 590 643 971 889 796 972 3 ...

correct output
18501

user output
18541

Test 4

Group: 1

Verdict:

input
10
991 740 433 558 522 338 240 27...

correct output
15614

user output
15693

Test 5

Group: 1

Verdict:

input
10
397 775 568 796 632 898 214 84...

correct output
20791

user output
21380

Test 6

Group: 2

Verdict:

input
1000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

correct output
9976

user output
10139

Test 7

Group: 2

Verdict:

input
1000
1000000000 1000000000 10000000...

correct output
9976000000000

user output
10139000000000

Test 8

Group: 2

Verdict:

input
1000
377480143 777745434 296992200 ...

correct output
4829974948360

user output
4911649195976

Test 9

Group: 2

Verdict:

input
1000
599885439 985529375 118284730 ...

correct output
4880180545408

user output
4962359776083

Test 10

Group: 2

Verdict:

input
1000
695015028 950574688 862418845 ...

correct output
5089402448969

user output
5175008595291

Test 11

Group: 3

Verdict:

input
100000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

correct output
1668928

user output
1680416

Test 12

Group: 3

Verdict:

input
100000
1000000000 1000000000 10000000...

correct output
1668928000000000

user output
1680416000000000

Test 13

Group: 3

Verdict:

input
100000
391395666 905124111 713186504 ...

correct output
818091245007558

user output
826513348263609

Test 14

Group: 3

Verdict:

input
100000
535008265 825579494 118746814 ...

correct output
819167891088786

user output
827595633043027

Test 15

Group: 3

Verdict:

input
100000
386356481 309596857 386341601 ...

correct output
816647450882063

user output
825042432497010