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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#735719#9482. Count Pseudo-PalindromeszqsWA 1282ms82900kbC++14997b2024-11-11 21:24:402024-11-11 21:24:44

Judging History

你现在查看的是最新测评结果

  • [2024-11-11 21:24:44]
  • 评测
  • 测评结果:WA
  • 用时:1282ms
  • 内存:82900kb
  • [2024-11-11 21:24:40]
  • 提交

answer

#include <cstdio>
#include <random>
#include <set>
#include <unordered_set>
#include <algorithm>
#include <cstring>

typedef unsigned long long ull;
std::mt19937_64 rnd(19410622);
std::unordered_multiset<ull> tab;
std::set<int> s;
int a[1000005], b[1000005], lst[500005], n;
ull hsh[1000005], ans1[1000005], ans2[1000005];
void solve(ull *ans) {
	s.clear(), tab.clear(), tab.insert(0), memset(lst, 0, sizeof lst);
	for (int i = 1; i <= n + n; ++ i) {//r=i;
		hsh[i] = hsh[i - 1] ^ b[a[i]];
		if (lst[a[i]]) s.erase(lst[a[i]]);
		else s.insert(i), lst[a[i]] = i;
		if (s.size()) {
			int x = *-- s.end();
			ans[x] += tab.count(hsh[i] ^ b[a[x]]);
		}
		tab.insert(hsh[i]);
	}
}

int main() {
	scanf("%d", &n);
	for (int i = 1; i <= n; ++ i) b[i] = rnd();
	for (int i = 1; i <= n + n; ++ i) scanf("%d", a + i);
	solve(ans1), std::reverse(a + 1, a + n + 1), solve(ans2);
	for (int i = 1; i <= n + n; ++ i) printf("%llu ", ans1[i] + ans2[n + n + 1 - i]);
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 11972kb

input:

2
1 1 2 2

output:

1 2 2 1 

result:

ok 4 tokens

Test #2:

score: 0
Accepted
time: 2ms
memory: 11948kb

input:

3
2 1 2 3 1 3

output:

1 2 2 2 2 1 

result:

ok 6 tokens

Test #3:

score: 0
Accepted
time: 2ms
memory: 11976kb

input:

4
1 2 4 3 4 1 3 2

output:

1 2 1 2 1 3 1 1 

result:

ok 8 tokens

Test #4:

score: 0
Accepted
time: 2ms
memory: 12044kb

input:

1
1 1

output:

1 1 

result:

ok 2 tokens

Test #5:

score: -100
Wrong Answer
time: 1282ms
memory: 82900kb

input:

500000
233733 151347 468353 495903 234861 297169 312993 2734 287872 359375 79017 285205 219439 37290 409190 194953 306816 472906 123794 121028 66509 62235 385879 300188 485875 72413 167304 333428 33910 220100 151575 22575 206653 82054 111518 34032 48702 198940 6262 222529 170641 1735 38943 235003 11...

output:

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

result:

wrong answer 222nd words differ - expected: '1', found: '2'