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ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#487937 | #6631. Maximum Bitwise OR | ucup-team052# | WA | 104ms | 52944kb | C++23 | 2.2kb | 2024-07-23 13:35:53 | 2024-07-23 13:35:54 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 5;
int pre[N][30], mn[N][30], a[N];
int T, n, q;
int p[30][N << 2];
void build(int id, int u, int l, int r) {
if (l == r) {
p[id][u] = mn[l][id];
return;
}
int mid = (l + r) >> 1;
build(id, u << 1, l, mid);
build(id, u << 1 | 1, mid + 1, r);
p[id][u] = min(p[id][u << 1], p[id][u << 1 | 1]);
}
int query(int id, int u, int L, int R, int l, int r) {
if (l <= L && R <= r) return p[id][u];
int mid = (L + R) >> 1, ans = 1e9;
if (mid >= l) ans = query(id, u << 1, L, mid, l, r);
if (mid + 1 <= r) ans = min(ans, query(id, u << 1 | 1, mid + 1, R, l, r));
return ans;
}
int main() {
scanf("%d", &T);
while (T--) {
scanf("%d%d", &n, &q);
for (int i = 1; i <= n; i++) scanf("%d", &a[i]);
for (int i = 1; i <= n; i++) {
memcpy(pre[i], pre[i - 1], sizeof(pre[i]));
memset(mn[i], 0x3f, sizeof(mn[i]));
int last = -1;
for (int j = 0; j < 30; j++) {
if (a[i] >= (1 << j)) mn[i][j] = last + 1;
if ((a[i] >> j) & 1) {
pre[i][j] = i;
last = j;
}
}
}
for (int i = 0; i < 30; i++) build(i, 1, 1, n);
while (q--) {
int l, r;
scanf("%d%d", &l, &r);
int cnt = 0, high = -1;
for (int i = 0; i < 30; i++) {
if (pre[r][i] >= l) {
++cnt;
high = i;
}
}
if (cnt == high + 1) {
if (high == -1) printf("0 0\n");
else printf("%d 0\n", (1 << (high + 1)) - 1);
continue;
}
printf("%d ", (1 << (high + 1)) - 1);
vector <int> vec;
int ll = -1, rr = -1;
for (int i = 0; i <= high; i++) {
if (pre[r][i] < l) {
if (ll == -1) ll = i;
rr = i;
} else {
if (pre[pre[r][i] - 1][i] < l) vec.push_back(pre[r][i]);
}
}
sort(vec.begin(), vec.end());
auto check = [&](int L, int R) {
if (L > R) return false;
// fprintf(stderr, "L = %d, R = %d, val = %d\n", L, R, query(rr, 1, n, 1, L, R));
return query(rr, 1, n, 1, L, R) <= ll;
};
int ans = 0, now = l;
for (auto i : vec) {
ans |= check(now, i - 1);
now = i + 1;
}
ans |= check(now, r);
printf("%d\n", ans ? 1 : 2);
}
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 50944kb
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: 51012kb
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: 0
Accepted
time: 104ms
memory: 52944kb
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:
ok 200000 numbers
Test #4:
score: -100
Wrong Answer
time: 101ms
memory: 50928kb
input:
33333 3 3 925088809 339284112 289540728 3 3 1 3 1 1 3 3 422399522 892365243 216341776 3 3 3 3 1 2 3 3 668932010 837523227 840095874 1 3 1 3 3 3 3 3 731584574 357877180 359063739 1 1 1 1 3 3 3 3 463358343 833924976 847087403 2 3 3 3 1 2 3 3 377154649 772000701 656357011 2 3 1 2 2 3 3 3 977492169 5540...
output:
536870911 2 1073741823 2 1073741823 2 268435455 2 268435455 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 536870911 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 1073741823 2 67108863 2 1073741823 2 1073741...
result:
wrong answer 5506th numbers differ - expected: '2', found: '1'