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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#48482 | #1848. Interval Shuffle | dykw | WA | 243ms | 12648kb | C++14 | 2.3kb | 2022-09-13 23:53:28 | 2022-09-13 23:53:30 |
Judging History
answer
#include <bits/stdc++.h>
#define debug(...) fprintf(stderr, __VA_ARGS__)
using i64 = long long;
constexpr int N = 2e5 + 5, INF = 0x3f3f3f3f;
void optimize() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
}
int a[N];
struct {
int l, r, v, cov;
} tr[N * 4];
#define ls(x) (x * 2)
#define rs(x) (x * 2 + 1)
void pushup(int x) {
tr[x].v = std::max(tr[ls(x)].v, tr[rs(x)].v);
}
void build(int l, int r, int x = 1) {
tr[x] = {l, r, a[l], 0};
if (l == r) {
return;
}
int mid = (l + r) / 2;
build(l, mid, ls(x));
build(mid + 1, r, rs(x));
pushup(x);
}
void update(int x, int v, bool flag = true) {
if (v < tr[x].cov) {
return;
}
if (flag) {
tr[x].cov = v;
tr[x].v = v + 1;
} else {
tr[x].cov = tr[x].v = v;
}
}
void pushdown(int x) {
if (tr[x].cov) {
int v1 = tr[ls(x)].v, v2 = tr[rs(x)].v;
update(ls(x), tr[x].cov, tr[x].v > tr[x].cov && v1 >= v2);
update(rs(x), tr[x].cov, tr[x].v > tr[x].cov && v2 >= v1);
tr[x].cov = 0;
}
}
void modify(int l, int r, int v, int x = 1) {
if (l <= tr[x].l && tr[x].r <= r) {
update(x, v, tr[x].v == v);
return;
}
pushdown(x);
int mid = (tr[x].l + tr[x].r) / 2;
if (l <= mid) {
modify(l, r, v, ls(x));
}
if (r > mid) {
modify(l, r, v, rs(x));
}
pushup(x);
}
int query(int l, int r, int x = 1) {
if (l <= tr[x].l && tr[x].r <= r) {
return tr[x].v;
}
pushdown(x);
int mid = (tr[x].l + tr[x].r) / 2;
if (l > mid) {
return query(l, r, rs(x));
} else if (r <= mid) {
return query(l, r, ls(x));
} else {
return std::max(query(l, r, ls(x)), query(l, r, rs(x)));
}
}
void pushall(int x = 1) {
if (tr[x].l == tr[x].r) {
printf("%d ", tr[x].v);
return;
}
pushdown(x);
pushall(ls(x));
pushall(rs(x));
}
int main(void) {
// optimize();
int n, m;
scanf("%d%d", &n, &m);
for (int i = 1; i <= n; ++i) {
scanf("%d", &a[i]);
}
build(1, n);
for (int i = 1, l, r; i <= m; ++i) {
scanf("%d%d", &l, &r);
int mx = query(l, r);
modify(l, r, mx);
}
pushall();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3668kb
input:
4 3 0 1 0 1 2 4 1 3 2 3
output:
2 4 3 2
result:
ok 4 number(s): "2 4 3 2"
Test #2:
score: -100
Wrong Answer
time: 243ms
memory: 12648kb
input:
188394 182563 1 40 31 12 49 8 30 49 46 22 49 36 11 47 15 32 20 18 11 41 4 49 31 28 14 33 27 3 5 30 23 30 36 42 24 5 35 25 8 21 7 7 0 1 10 34 26 16 15 36 39 4 11 41 34 30 7 40 7 26 27 50 6 4 15 12 20 2 16 45 8 37 12 25 33 3 23 16 13 47 33 40 25 8 29 42 25 34 49 17 1 12 37 7 27 11 44 11 38 6 46 17 35 ...
output:
1 48490 77084 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 83461 8346...
result:
wrong answer 2nd numbers differ - expected: '49137', found: '48490'