Submission #56314937

Source Code Expand

#include<bits/stdc++.h>
#define lc(p) ((p)*2)
#define rc(p) ((p)*2+1)
#define mkpr make_pair
#define LL long long
using namespace std;
inline LL read() {
	char ch=getchar();
	LL x=0;
	bool t=0;
	while(ch<'0'||ch>'9')   t|=ch=='-',ch=getchar();
	while(ch>='0'&&ch<='9') x=x*10+(ch^48),ch=getchar();
	return t?-x:x;
}
int n,a[200005],s[200005];
LL ans;
LL cnt[30][2];
int main() {
	cin>>n;
	for(int i=1; i<=n; i++) {
		cin>>a[i];
		s[i]=s[i-1]^a[i];
	}
	for(int i=27;i>=0;i--)cnt[i][0]=1;
	for(int i=1; i<=n; i++) {
		for(int j=27; j>=0; j--) {
			int c=(s[i]>>j)&1;
			cnt[j][c]++;
			ans+=(1ll<<j)*cnt[j][c^1];
		}
		ans-=s[i]^s[i-1];
	}
	cout<<ans;
	return 0;
}

Submission Info

Submission Time
Task E - Xor Sigma Problem
User Lotus_Land
Language C++ 20 (gcc 12.2)
Score 450
Code Size 698 Byte
Status AC
Exec Time 52 ms
Memory 5204 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 450 / 450
Status
AC × 2
AC × 26
Set Name Test Cases
Sample 00_sample_01.txt, 00_sample_02.txt
All 00_sample_01.txt, 00_sample_02.txt, 01_test_01.txt, 01_test_02.txt, 01_test_03.txt, 01_test_04.txt, 01_test_05.txt, 01_test_06.txt, 01_test_07.txt, 01_test_08.txt, 01_test_09.txt, 01_test_10.txt, 01_test_11.txt, 01_test_12.txt, 01_test_13.txt, 01_test_14.txt, 01_test_15.txt, 01_test_16.txt, 01_test_17.txt, 01_test_18.txt, 01_test_19.txt, 01_test_20.txt, 01_test_21.txt, 01_test_22.txt, 01_test_23.txt, 01_test_24.txt
Case Name Status Exec Time Memory
00_sample_01.txt AC 1 ms 3656 KiB
00_sample_02.txt AC 1 ms 3568 KiB
01_test_01.txt AC 52 ms 5016 KiB
01_test_02.txt AC 52 ms 5056 KiB
01_test_03.txt AC 52 ms 5052 KiB
01_test_04.txt AC 52 ms 5000 KiB
01_test_05.txt AC 52 ms 5012 KiB
01_test_06.txt AC 52 ms 5060 KiB
01_test_07.txt AC 51 ms 5020 KiB
01_test_08.txt AC 52 ms 4992 KiB
01_test_09.txt AC 51 ms 4932 KiB
01_test_10.txt AC 52 ms 5052 KiB
01_test_11.txt AC 52 ms 5016 KiB
01_test_12.txt AC 24 ms 5204 KiB
01_test_13.txt AC 38 ms 5060 KiB
01_test_14.txt AC 52 ms 5016 KiB
01_test_15.txt AC 39 ms 5048 KiB
01_test_16.txt AC 36 ms 4560 KiB
01_test_17.txt AC 18 ms 3964 KiB
01_test_18.txt AC 6 ms 3724 KiB
01_test_19.txt AC 18 ms 4012 KiB
01_test_20.txt AC 52 ms 5004 KiB
01_test_21.txt AC 1 ms 3468 KiB
01_test_22.txt AC 1 ms 3456 KiB
01_test_23.txt AC 1 ms 3460 KiB
01_test_24.txt AC 1 ms 3444 KiB