144 lines
3.1 KiB
C++
144 lines
3.1 KiB
C++
/* Problem URL: https://codeforces.com/problemset/problem/474/F */
|
|
|
|
#include <bits/stdc++.h>
|
|
#include <ext/pb_ds/assoc_container.hpp>
|
|
#include <ext/pb_ds/tree_policy.hpp>
|
|
|
|
using namespace std;
|
|
using namespace __gnu_pbds;
|
|
|
|
template <class T, class comp = less<>>
|
|
using ordered_set = tree<T, null_type , comp , rb_tree_tag , tree_order_statistics_node_update>;
|
|
|
|
#define V vector
|
|
|
|
#define rmin(a, b) a = min(a, b)
|
|
#define rmax(a, b) a = max(a, b)
|
|
|
|
#define rep(i, lim) for (int i = 0; i < (lim); i++)
|
|
#define nrep(i, s, lim) for (int i = s; i < (lim); i++)
|
|
|
|
#define repv(i, v) for (auto &i : (v))
|
|
#define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; }
|
|
#define sortv(v) sort(v.begin(), v.end())
|
|
#define all(v) (v).begin(), (v).end()
|
|
|
|
using vi = vector<int>;
|
|
using vvi = vector<vi>;
|
|
using vvvi = vector<vvi>;
|
|
using vvvvi = vector<vvvi>;
|
|
|
|
using ll = long long;
|
|
|
|
using vl = vector<ll>;
|
|
using vvl = vector<vl>;
|
|
using vvvl = vector<vvl>;
|
|
using vvvvl = vector<vvvl>;
|
|
|
|
template<class v>
|
|
auto operator<<(ostream &os, const vector<v> &vec)->ostream& {
|
|
os << vec[0];
|
|
for (size_t i = 1; i < vec.size(); i++) {
|
|
os << ' ' << vec[i];
|
|
}
|
|
os << '\n';
|
|
return os;
|
|
}
|
|
|
|
template<class v>
|
|
auto operator>>(istream &is, vector<v> &vec)->istream& {
|
|
for (auto &i : vec) {
|
|
is >> i;
|
|
}
|
|
return is;
|
|
}
|
|
|
|
template<class v>
|
|
auto operator<<(ostream &os, const vector<vector<v>> &vec)->ostream& {
|
|
for (auto &i : vec) {
|
|
os << i[0];
|
|
for (size_t j = 1; j < i.size(); j++) {
|
|
os << ' ' << i[j];
|
|
}
|
|
os << '\n';
|
|
}
|
|
return os;
|
|
}
|
|
|
|
template<class v>
|
|
auto operator>>(istream &is, vector<vector<v>> &vec)->istream& {
|
|
for (auto &i : vec) {
|
|
for (auto &j : i) {
|
|
is >> j;
|
|
}
|
|
}
|
|
return is;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
ios::sync_with_stdio(false);
|
|
cin.tie(nullptr);
|
|
|
|
int n;
|
|
cin >> n;
|
|
|
|
vi fds(n);
|
|
cin >> fds;
|
|
|
|
vvi sparse(20, vi(n));
|
|
|
|
rep(i, n) {
|
|
sparse[0][i] = fds[i];
|
|
}
|
|
|
|
nrep(j, 1, 20) {
|
|
rep(i, n - (1 << (j - 1))) {
|
|
sparse[j][i] = __gcd(sparse[j - 1][i], sparse[j - 1][i + (1 << (j - 1))]);
|
|
}
|
|
}
|
|
|
|
auto squery = [&](int l, int r) {
|
|
int log = 31 - __builtin_clz(r - l + 1);
|
|
return __gcd(sparse[log][l], sparse[log][r - (1 << log) + 1]);
|
|
};
|
|
|
|
while (__builtin_popcount(n) != 1) {
|
|
n++;
|
|
fds.push_back(1);
|
|
}
|
|
|
|
vvi seg(n * 2);
|
|
|
|
nrep(i, n, n * 2) {
|
|
seg[i] = {fds[i - n]};
|
|
}
|
|
|
|
for (int i = n - 1; i > 0; i--) {
|
|
merge(all(seg[i * 2]), all(seg[i * 2 + 1]), back_inserter(seg[i]));
|
|
}
|
|
|
|
function<int(int, int, int, int, int, int)> query = [&](int i, int l, int r, int tl, int tr, int v) -> int {
|
|
if (l > tr || r < tl) {
|
|
return 0;
|
|
}
|
|
|
|
if (l >= tl && r <= tr) {
|
|
return upper_bound(all(seg[i]), v) - lower_bound(all(seg[i]), v);
|
|
}
|
|
|
|
int mid = (l + r) >> 1;
|
|
|
|
return query(i * 2, l, mid, tl, tr, v) + query(i * 2 + 1, mid + 1, r, tl, tr, v);
|
|
};
|
|
|
|
int q;
|
|
cin >> q;
|
|
while (q--) {
|
|
int l, r;
|
|
cin >> l >> r;
|
|
l--, r--;
|
|
cout << (r - l + 1) - query(1, 0, n - 1, l, r, squery(l, r)) << '\n';
|
|
}
|
|
}
|