結果
| 問題 |
No.1332 Range Nearest Query
|
| コンテスト | |
| ユーザー |
fastmath
|
| 提出日時 | 2021-01-08 21:59:31 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 928 ms / 2,500 ms |
| コード長 | 2,584 bytes |
| コンパイル時間 | 2,216 ms |
| コンパイル使用メモリ | 199,520 KB |
| 最終ジャッジ日時 | 2025-01-17 11:57:40 |
|
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 48 |
ソースコード
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcountll
#define ll long long
#define mp make_pair
#define x first
#define y second
#define Time (double)clock()/CLOCKS_PER_SEC
#define debug(x) std::cout << #x << ": " << x << '\n';
#define FOR(i, n) for (int i = 0; i < n; ++i)
#define pb push_back
#define trav(a, x) for (auto& a : x)
using vi = vector<int>;
template <typename T>
std::ostream& operator <<(std::ostream& output, const pair <T, T> & data)
{
output << "(" << data.x << "," << data.y << ")";
return output;
}
template <typename T>
std::ostream& operator <<(std::ostream& output, const std::vector<T>& data)
{
for (const T& x : data)
output << x << " ";
return output;
}
//ll div_up(ll a, ll b) { return a/b+((a^b)>0&&a%b); } // divide a by b rounded up
//ll div_down(ll a, ll b) { return a/b-((a^b)<0&&a%b); } // divide a by b rounded down
#define tcT template<class T
#define tcTU tcT, class U
tcT> using V = vector<T>;
tcT> void re(V<T>& x) {
trav(a, x)
cin >> a;
}
tcT> bool ckmin(T& a, const T& b) {
return b < a ? a = b, 1 : 0;
} // set a = min(a,b)
tcT> bool ckmax(T& a, const T& b) {
return a < b ? a = b, 1 : 0;
}
const int N = 3e5+7, INF = 1e9+7;
int n, q;
int a[N];
vi t[N << 2];
void build(int v, int tl, int tr) {
if (tl == tr) {
t[v] = {a[tl]};
return;
}
int tm = (tl + tr) >> 1;
build(v * 2 + 1, tl, tm);
build(v * 2 + 2, tm + 1, tr);
trav (x, t[v * 2 + 1])
t[v].app(x);
trav (x, t[v * 2 + 2])
t[v].app(x);
sort(all(t[v]));
}
int get(int v, int tl, int tr, int l, int r, int x) {
if (tr < l || r < tl)
return INF;
if (l <= tl && tr <= r) {
auto u = lower_bound(all(t[v]), x);
int ans = INF;
if (u != t[v].begin())
ckmin(ans, abs(*prev(u) - x));
if (u != t[v].end())
ckmin(ans, abs(*u - x));
return ans;
}
int tm = (tl + tr) >> 1;
return min(get(v * 2 + 1, tl, tm, l, r, x) , get(v * 2 + 2, tm + 1, tr, l, r, x));
}
signed main() {
#ifdef HOME
freopen("input.txt", "r", stdin);
#else
#define endl '\n'
ios_base::sync_with_stdio(0); cin.tie(0);
#endif
cin >> n;
FOR (i, n)
cin >> a[i];
build(0, 0, n - 1);
cin >> q;
while (q--) {
int l, r, x;
cin >> l >> r >> x;
cout << get(0, 0, n - 1, l - 1, r - 1, x) << endl;
}
}
fastmath