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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#608180#8520. Xor PartitionsBlackPandaTL 215ms10152kbC++14660b2024-10-03 19:24:202024-10-03 19:24:20

Judging History

你现在查看的是最新测评结果

  • [2024-10-03 19:24:20]
  • 评测
  • 测评结果:TL
  • 用时:215ms
  • 内存:10152kb
  • [2024-10-03 19:24:20]
  • 提交

answer

#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
const ll p = 1e9 + 7;
const int MAXN = 3e5 + 7;

ll a[MAXN];
ll pre[MAXN];
ll dp[MAXN];

void get_ans(int n)
{
	memset(dp , 0 , sizeof(dp));
	memset(pre , 0 , sizeof(pre));
	dp[0] = 1;
	for(int i = 1 ; i <= n ; i++)
	{
		pre[i] = pre[i - 1] ^ a[i];
	}
	for(int i = 1 ; i <= n ; i++)
	{
		for(int j = 0 ; j <= i - 1 ; j++)
		{
			(dp[i] += (dp[j] % p) * ((pre[i] ^ pre[j]) % p) % p) %= p;
		}
	}
}

int main()
{
	int n;
	scanf("%d" , &n);
	for(int i = 1 ; i <= n ; i++)
	{
		scanf("%lld" , &a[i]);
	}
	get_ans(n);
	printf("%lld" , dp[n]);
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 2ms
memory: 9848kb

input:

4
7 3 1 2

output:

170

result:

ok 1 number(s): "170"

Test #2:

score: 0
Accepted
time: 0ms
memory: 8892kb

input:

1
0

output:

0

result:

ok 1 number(s): "0"

Test #3:

score: 0
Accepted
time: 0ms
memory: 8792kb

input:

1
1

output:

1

result:

ok 1 number(s): "1"

Test #4:

score: 0
Accepted
time: 0ms
memory: 9712kb

input:

3
1 2 3

output:

16

result:

ok 1 number(s): "16"

Test #5:

score: 0
Accepted
time: 0ms
memory: 8572kb

input:

4
0 1 0 1

output:

2

result:

ok 1 number(s): "2"

Test #6:

score: 0
Accepted
time: 3ms
memory: 9864kb

input:

562
918479109239293921 960173570446350728 374394588863436385 418106819278123099 473761712658352147 662782574081105364 824954323015093862 827581845536521847 184394794881199801 820907621998888642 606529830885621237 961790689782125501 582742201855597942 337901250755571075 287706594894797714 18578215893...

output:

641941658

result:

ok 1 number(s): "641941658"

Test #7:

score: 0
Accepted
time: 4ms
memory: 9728kb

input:

806
154088894908249861 515620644168920420 987371724389985655 237699073224022026 870013393084040616 381176515155022022 684658378726319957 263518193038353112 315710296046387135 551218921219797967 118207002034108547 368754899860827737 935813803983235940 144555339393414539 776366257845243712 97482835862...

output:

322263213

result:

ok 1 number(s): "322263213"

Test #8:

score: 0
Accepted
time: 0ms
memory: 8944kb

input:

730
504625950218841699 11051067425914472 76969373706503912 549617734382960079 841136352271894226 827409290048280121 385214931443507037 450322494678858761 648956361691910260 885215198848035026 943077096807914988 563680977442136779 928183411196746637 238397217357311158 42194234771144128 13855813780489...

output:

302666182

result:

ok 1 number(s): "302666182"

Test #9:

score: 0
Accepted
time: 2ms
memory: 9976kb

input:

810
799481157885297669 36700891760566107 106799307598176179 525457060642356612 692305388685262192 734925968562669769 944342162656870872 318551639297444833 948338452318307252 947010621108694579 847591264136215873 843729821439293876 795197982657816209 514358412232554388 824474357024876223 262652125198...

output:

602149347

result:

ok 1 number(s): "602149347"

Test #10:

score: 0
Accepted
time: 4ms
memory: 9740kb

input:

753
19680670121054815 730848550760427515 382393175530043476 135251628628086143 953972980324431759 968402030274542386 239081692291889007 208406098506299898 210617837980094596 241386761622363415 614349192152783697 674634709373373543 954789607048365380 176448580882244695 495604367525148905 838787911842...

output:

444552931

result:

ok 1 number(s): "444552931"

Test #11:

score: 0
Accepted
time: 4ms
memory: 8516kb

input:

1000
5910966043171798 444610656319788280 3688812861187777 527406121506858974 348651678231967453 742595325576725873 269979149588588141 367500509520651713 721087042810251324 781730710329969382 273470825025201702 217943660725681870 798497786765762465 932985478420399210 51222819072897891 123000680900329...

output:

375397549

result:

ok 1 number(s): "375397549"

Test #12:

score: 0
Accepted
time: 215ms
memory: 10152kb

input:

10000
836416588552416746 715139925233188073 540045750150764470 657083656580111699 453024602030341020 32332432208735263 675754504084029016 182620749259887560 238151424129511167 51110718389056302 51405438498364014 122526276542156527 610483897196537731 847874891186284312 145487013148799803 786588991661...

output:

465337540

result:

ok 1 number(s): "465337540"

Test #13:

score: -100
Time Limit Exceeded

input:

100000
730682239762265959 307059402620664122 115979858233261975 244728110596258449 879226800697788913 227027291248976655 132171973066857319 837530086673521636 990238586667417326 344010698420539749 52603681260480846 974344540159711285 136286036328847931 585214727445181288 444702707623149922 204441001...

output:


result: