이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,popcnt,sse4,abm")
#include <bits/stdc++.h>
using namespace std;
#ifdef WAIMAI
#define debug(HEHE...) cout << "[" << #HEHE << "] : ", dout(HEHE)
void dout() {cout << '\n';}
template<typename T, typename...U>
void dout (T t, U...u) {cout << t << (sizeof... (u) ? ", " : ""), dout (u...);}
#else
#define debug(...) 7122
#endif
#define ll long long
#define Waimai ios::sync_with_stdio(false), cin.tie(0)
#define FOR(x,a,b) for (int x = a, I = b; x <= I; x++)
#define pb emplace_back
#define F first
#define S second
#define lpos pos*2
#define rpos pos*2+1
const int SIZE = 2e5 + 5;
const int H = __lg(SIZE);
int n, m, q;
vector<int> lis;
int hl[SIZE], hr[SIZE];
int to[SIZE][H + 1];
struct Node {
int mx, lazy;
Node operator + (const Node &rhs) const {
Node re;
re.mx = max(mx, rhs.mx);
re.lazy = 0;
return re;
}
} node[SIZE << 3];
void push(int pos, int l, int r) {
node[pos].mx += node[pos].lazy;
if (l < r) {
node[lpos].lazy += node[pos].lazy;
node[rpos].lazy += node[pos].lazy;
}
node[pos].lazy = 0;
}
void pull(int pos, int l, int r) {
int mid = (l + r) / 2;
push(lpos, l, mid);
push(rpos, mid + 1, r);
node[pos] = node[lpos] + node[rpos];
}
void upd(int pos, int l, int r, int L, int R, int x) {
if (l == L && r == R) {
node[pos].lazy += x;
push(pos, L, R);
return;
}
push(pos, L, R);
int mid = (L + R) / 2;
if (r <= mid) upd(lpos, l, r, L, mid, x);
else if (l > mid) upd(rpos, l, r, mid + 1, R, x);
else {
upd(lpos, l, mid, L, mid, x);
upd(rpos, mid + 1, r, mid + 1, R, x);
}
pull(pos, L, R);
}
void solve() {
cin >> n;
FOR (i, 1, n) {
cin >> hl[i] >> hr[i];
lis.pb(hl[i]), lis.pb(hr[i]);
}
{
sort(lis.begin(), lis.end());
lis.erase(unique(lis.begin(), lis.end()), lis.end());
m = lis.size();
FOR (i, 1, n) {
hl[i] = lower_bound(lis.begin(), lis.end(), hl[i]) - lis.begin() + 1;
hr[i] = lower_bound(lis.begin(), lis.end(), hr[i]) - lis.begin() + 1;
}
}
to[n + 1][0] = n + 1;
for (int i = 1, p = 1; i <= n; i++) {
while (p <= n && node[1].mx <= 1) {
upd(1, hl[p], hr[p], 1, m, 1);
p++;
}
to[i][0] = (node[1].mx > 1 ? p - 1 : p);
upd(1, hl[i], hr[i], 1, m, -1);
}
FOR (j, 1, H) FOR (i, 1, n + 1) to[i][j] = to[to[i][j - 1]][j - 1];
cin >> q;
while (q--) {
int l, r, ans = 0;
cin >> l >> r;
for (int i = H, pos = l; i >= 0; i--) if (to[pos][i] <= r) {
ans += 1 << i;
pos = to[pos][i];
}
ans++;
cout << ans << '\n';
}
}
int main() {
Waimai;
solve();
}
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |