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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#376109#6631. Maximum Bitwise ORMine_KingWA 127ms151100kbC++143.0kb2024-04-03 20:49:332024-04-03 20:49:34

Judging History

你现在查看的是最新测评结果

  • [2024-04-03 20:49:34]
  • 评测
  • 测评结果:WA
  • 用时:127ms
  • 内存:151100kb
  • [2024-04-03 20:49:33]
  • 提交

answer

// 君の人生は月明かりだ、有りがちだなんて言わせるものか
// Think twice, code once.
#include <cstdio>
#include <string>
#include <cstring>
#include <iostream>
#include <algorithm>
#define eputchar(c) putc(c, stderr)
#define eprintf(...) fprintf(stderr, __VA_ARGS__)
#define eputs(str) fputs(str, stderr), putc('\n', stderr)
using namespace std;

int T, n, q, a[100005], op[100005][30], lst[100005][30], vis[100005];
struct SegmentTree {
#define ls(x) (x * 2)
#define rs(x) (x * 2 + 1)

	int w[400005], l[400005], r[400005];

	void build(int ll, int rr, int now = 1) {
		w[now] = 0;
		l[now] = ll, r[now] = rr;
		if (ll == rr) return ;
		int mid = (ll + rr) / 2;
		build(ll, mid, ls(now)), build(mid + 1, rr, rs(now));
		return ;
	}
	void update(int pos, int val, int now = 1) {
		if (l[now] == r[now]) {w[now] = val; return ;}
		int mid = (l[now] + r[now]) / 2;
		if (pos <= mid) update(pos, val, ls(now));
		else update(pos, val, rs(now));
		w[now] = w[ls(now)] | w[rs(now)];
		return ;
	}
	int query(int ll, int rr, int now = 1) {
		if (ll <= l[now] && r[now] <= rr) return w[now];
		int mid = (l[now] + r[now]) / 2, res = 0;
		if (ll <= mid) res |= query(ll, rr, ls(now));
		if (mid < rr) res |= query(ll, rr, rs(now));
		return res;
	}

#undef ls
#undef rs
} tr[30], all; 

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> T;
	while (T--) {
		cin >> n >> q;
		all.build(1, n);
		for (int i = 0; i < 30; i++) tr[i].build(1, n);
		for (int i = 1; i <= n; i++) {
			cin >> a[i];
			all.update(i, a[i]);
			memset(op[i], 0, sizeof(op[i]));
			memcpy(lst[i], lst[i - 1], sizeof(lst[i]));
			for (int j = 0; j < 30 && 1 << j <= a[i]; j++) {
				tr[j].update(i, op[i][j] = a[i] ^ (a[i] - (1 << j)));
				if (a[i] >> j & 1) lst[i][j] = i;
			}
		}
		while (q--) {
			int l, r;
			cin >> l >> r;
			int orsum = all.query(l, r), res = (1 << (__lg(orsum) + 1)) - 1, ans = 2;
			if (orsum == res) {cout << res << " 0\n"; continue;}
			for (int i = 0; i < 30; i++)
				if (lst[r][i] >= l) {
					// vis[lst[r][i]] = 1;
					int p = 0, q = 0;
					if (lst[r][i] > l) p = all.query(l, lst[r][i] - 1);
					if (lst[r][i] < r) q = all.query(lst[r][i] + 1, r);
					for (int j = 0; j < 30; j++)
						if ((p | op[lst[r][i]][j] | q) == res) {ans = 1; break;}
					if (ans == 1) break;
				}
			// for (int i = 0; i < 30; i++)
			// 	if (lst[lst[r][i] - 1][i] >= l) vis[lst[r][i]] = 0;
			if (ans == 2) {
				for (int i = 0; i < 30; i++)
					if (lst[r][i] >= l && lst[lst[r][i] - 1][i] >= l && !vis[lst[r][i]]) {
						vis[lst[r][i]] = 1;
						for (int j = 0; j < 30; j++)
							tr[j].update(lst[r][i], 0);
					}
				for (int i = 0; i < 30; i++)
					if ((tr[i].query(l, r) | orsum) == res) ans = 1;
				for (int i = 0; i < 30; i++)
					if (lst[r][i] >= l && lst[lst[r][i] - 1][i] >= l && vis[lst[r][i]]) {
						vis[lst[r][i]] = 0;
						for (int j = 0; j < 30; j++)
							tr[j].update(lst[r][i], op[lst[r][i]][j]);
					}
			}
			cout << res << ' ' << ans << '\n';
		}
	}
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 3ms
memory: 151100kb

input:

1
3 2
10 10 5
1 2
1 3

output:

15 2
15 0

result:

ok 4 number(s): "15 2 15 0"

Test #2:

score: 0
Accepted
time: 96ms
memory: 149120kb

input:

100000
1 1
924704060
1 1
1 1
149840457
1 1
1 1
515267304
1 1
1 1
635378394
1 1
1 1
416239424
1 1
1 1
960156404
1 1
1 1
431278082
1 1
1 1
629009153
1 1
1 1
140374311
1 1
1 1
245014761
1 1
1 1
445512399
1 1
1 1
43894730
1 1
1 1
129731646
1 1
1 1
711065534
1 1
1 1
322643984
1 1
1 1
482420443
1 1
1 1
20...

output:

1073741823 2
268435455 2
536870911 2
1073741823 2
536870911 2
1073741823 2
536870911 2
1073741823 2
268435455 2
268435455 2
536870911 2
67108863 2
134217727 2
1073741823 2
536870911 2
536870911 2
268435455 2
536870911 2
536870911 2
536870911 2
268435455 2
268435455 2
1073741823 2
16777215 2
10737418...

result:

ok 200000 numbers

Test #3:

score: -100
Wrong Answer
time: 127ms
memory: 149064kb

input:

50000
2 2
924896435 917026400
1 2
1 2
2 2
322948517 499114106
1 2
2 2
2 2
152908571 242548777
1 1
1 2
2 2
636974385 763173214
1 2
1 1
2 2
164965132 862298613
1 1
1 2
2 2
315078033 401694789
1 2
1 2
2 2
961358343 969300127
2 2
1 2
2 2
500628228 28065329
1 2
1 2
2 2
862229381 863649944
1 2
2 2
2 2
541...

output:

1073741823 2
1073741823 2
536870911 2
536870911 2
268435455 2
268435455 2
1073741823 2
1073741823 2
268435455 2
1073741823 2
536870911 2
536870911 2
1073741823 2
1073741823 2
536870911 2
536870911 2
1073741823 2
1073741823 2
1073741823 2
268435455 2
536870911 2
536870911 2
1073741823 2
1073741823 2
...

result:

wrong answer 1556th numbers differ - expected: '2', found: '1'