結果

問題 No.1778 括弧列クエリ / Bracketed Sequence Query
ユーザー ChanyuhChanyuh
提出日時 2022-01-27 20:46:38
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 412 ms / 2,000 ms
コード長 4,909 bytes
コンパイル時間 1,551 ms
コンパイル使用メモリ 127,592 KB
最終ジャッジ日時 2025-01-27 15:44:45
ジャッジサーバーID
(参考情報)
judge5 / judge5
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ファイルパターン 結果
sample AC * 1
other AC * 27
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include<iostream>
#include<array>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<complex>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
#include<tuple>
#include<cassert>
using namespace std;
typedef long long ll;
const ll mod = 1000000007;
const ll INF = (ll)1000000007 * 1000000007;
typedef pair<int, int> P;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define Per(i,sta,n) for(int i=n-1;i>=sta;i--)
typedef long double ld;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<ll, ll> LP;
int dx[4]={1,-1,0,0};
int dy[4]={0,0,1,-1};
template<class T>bool chmax(T &a, const T &b) {if(a<b){a=b;return 1;}return 0;}
template<class T>bool chmin(T &a, const T &b) {if(b<a){a=b;return 1;}return 0;}
template <class S, S (*op)(S, S), S (*e)()> struct SegmentTree {
public:
SegmentTree() : SegmentTree(0) {}
SegmentTree(int n) : SegmentTree(std::vector<S>(n, e())) {}
SegmentTree(const std::vector<S>& v) : _n(int(v.size())) {
log = ceil_pow2(_n);
size = 1 << log;
d = std::vector<S>(2 * size, e());
for (int i = 0; i < _n; i++) d[size + i] = v[i];
for (int i = size - 1; i >= 1; i--) {
update(i);
}
}
void set_val(int p, S x) {
assert(0 <= p && p < _n);
p += size;
d[p] = x;
for (int i = 1; i <= log; i++) update(p >> i);
}
S get(int p) {
assert(0 <= p && p < _n);
return d[p + size];
}
S query(int l, int r) {
assert(0 <= l && l <= r && r <= _n);
S sml = e(), smr = e();
l += size;
r += size;
while (l < r) {
if (l & 1) sml = op(sml, d[l++]);
if (r & 1) smr = op(d[--r], smr);
l >>= 1;
r >>= 1;
}
return op(sml, smr);
}
S all_query() { return d[1]; }
template <bool (*f)(S)> int max_right(int l) {//f(op([l,r)))==truer
return max_right(l, [](S x) { return f(x); });
}
template <class F> int max_right(int l, F f) {
assert(0 <= l && l <= _n);
assert(f(e()));
if (l == _n) return _n;
l += size;
S sm = e();
do {
while (l % 2 == 0) l >>= 1;
if (!f(op(sm, d[l]))) {
while (l < size) {
l = (2 * l);
if (f(op(sm, d[l]))) {
sm = op(sm, d[l]);
l++;
}
}
return l - size;
}
sm = op(sm, d[l]);
l++;
} while ((l & -l) != l);
return _n;
}
template <bool (*f)(S)> int min_left(int r) {//f(op([l,r)))==truel
return min_left(r, [](S x) { return f(x); });
}
template <class F> int min_left(int r, F f) {
assert(0 <= r && r <= _n);
assert(f(e()));
if (r == 0) return 0;
r += size;
S sm = e();
do {
r--;
while (r > 1 && (r % 2)) r >>= 1;
if (!f(op(d[r], sm))) {
while (r < size) {
r = (2 * r + 1);
if (f(op(d[r], sm))) {
sm = op(d[r], sm);
r--;
}
}
return r + 1 - size;
}
sm = op(d[r], sm);
} while ((r & -r) != r);
return 0;
}
private:
int _n, size, log;
std::vector<S> d;
void update(int k) { d[k] = op(d[2 * k], d[2 * k + 1]); }
int ceil_pow2(int n) {
int x = 0;
while ((1U << x) < (unsigned int)(n)) x++;
return x;
}
};
int n,q;
string S;
vector<int> a;
int F(int a,int b){return max(a,b);}
int e(){return -mod;}
void solve(){
cin >> n >> q;
cin >> S;
vector<int> v;
a.resize(n);
rep(i,n){
if(S[i]=='(') v.push_back(i);
else{
//cout << v.back() << endl;
a[v.back()]=i;
a[i]=v.back();
v.pop_back();
}
}
//rep(i,n) cout << a[i] << " ";
//cout << "" << endl;
SegmentTree<int,F,e> seg(a);
rep(i,q){
int x,y;cin >> x >> y;x--;y--;
int v=a[x],w=a[y];
int l=min(min(x,y),min(v,w)),r=max(max(x,y),max(v,w));
auto check=[&](int x){return x<r;};
int ans=seg.min_left(l+1,check);
if(ans==0){
cout << -1 << endl;
continue;
}
cout << ans << " " << a[ans-1]+1 << endl;
}
}
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
cout << fixed << setprecision(50);
solve();
}
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