結果
| 問題 |
No.3094 Stapler
|
| コンテスト | |
| ユーザー |
seren
|
| 提出日時 | 2025-04-06 19:57:25 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 7,366 bytes |
| コンパイル時間 | 4,616 ms |
| コンパイル使用メモリ | 262,420 KB |
| 実行使用メモリ | 68,904 KB |
| 最終ジャッジ日時 | 2025-10-23 22:24:50 |
| 合計ジャッジ時間 | 19,920 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| other | AC * 71 WA * 1 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
//*
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
// using mint = modint1000000007;
//*/
using ll = long long;
using i128 = __int128_t;
using pll = pair<ll, ll>;
using tlll = tuple<ll, ll, ll>;
using ld = long double;
const int INF = 1000100100;
const ll INFF = 1000100100100100100LL;
const int dx[4] = {0, 0, 1, -1}, dy[4] = {1, -1, 0, 0};
#define overload4(_1, _2, _3, _4, name, ...) name
#define rep1(i, n) for (ll i = 0; i < ll(n); i++)
#define rep2(i, l, r) for (ll i = ll(l); i < ll(r); i++)
#define rep3(i, l, r, d) for (ll i = ll(l); (d) > 0 ? i < ll(r) : i > ll(r); i += d)
#define rep(...) overload4(__VA_ARGS__, rep3, rep2, rep1)(__VA_ARGS__)
#define per(i, n) for (int i = (n) - 1; i >= 0; --i)
#define yesno(f) cout << (f ? "Yes" : "No") << endl;
#define YESNO(f) cout << (f ? "YES" : "NO") << endl;
#define all(a) (a).begin(), (a).end()
#define popc(x) __builtin_popcountll(ll(x))
template <typename S, typename T>
ostream &operator<<(ostream &os, const pair<S, T> &p) {
return os << p.first << ' ' << p.second;
}
template <typename T>
void printvec(const vector<T> &v) {
int n = v.size();
rep(i, n) cout << v[i] << (i == n - 1 ? "" : " ");
cout << '\n';
}
template <typename T>
void printvect(const vector<T> &v) {
for (auto &vi : v) cout << vi << '\n';
}
template <typename T>
void printvec2(const vector<vector<T>> &v) {
for (auto &vi : v) printvec(vi);
}
template <typename S, typename T>
bool chmax(S &x, const T &y) {
return (x < y) ? (x = y, true) : false;
}
template <typename S, typename T>
bool chmin(S &x, const T &y) {
return (x > y) ? (x = y, true) : false;
}
#ifdef LOCAL // https://zenn.dev/sassan/articles/19db660e4da0a4
#include "cpp-dump-main/dump.hpp"
#define dump(...) cpp_dump(__VA_ARGS__)
CPP_DUMP_DEFINE_DANGEROUS_EXPORT_OBJECT(val());
#else
#define dump(...)
#endif
struct io_setup {
io_setup() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout << fixed << setprecision(15);
}
} io_setup;
template <typename S, typename F>
struct Lazy_segtree {
using FS = function<S(S, S)>;
using FA = function<S(F, S)>;
using FF = function<F(F, F)>; // F composition(F f, F g): f⚪︎g
int n, m, height;
FS op;
FA mapping;
FF composition;
const S e;
const F id;
vector<S> seg;
vector<F> lazy;
Lazy_segtree(int n_, FS fs_, FA fa_, FF ff_, S e_, F id_) : n(n_), op(fs_), mapping(fa_), composition(ff_), e(e_), id(id_) {
m = 1, height = 0;
while (m < n) m <<= 1, height++;
seg.assign(2 * m, e), lazy.assign(2 * m, id);
}
Lazy_segtree(vector<S> &n_, FS fs_, FA fa_, FF ff_, S e_, F id_) : n(n_.size()), op(fs_), mapping(fa_), composition(ff_), e(e_), id(id_) {
m = 1, height = 0;
while (m < n) m <<= 1, height++;
seg.assign(2 * m, e), lazy.assign(2 * m, id);
copy(begin(n_), end(n_), begin(seg) + m);
for (int i = m - 1; i > 0; i--) seg[i] = op(seg[2 * i], seg[2 * i + 1]);
build();
}
inline S reflect(int i) const { return mapping(lazy[i], seg[i]); }
inline void recalc(int i) {
while (i >>= 1) seg[i] = op(reflect(2 * i), reflect(2 * i + 1));
}
// lazy eval
inline void eval(int i) {
lazy[2 * i] = composition(lazy[i], lazy[2 * i]);
lazy[2 * i + 1] = composition(lazy[i], lazy[2 * i + 1]);
seg[i] = reflect(i);
lazy[i] = id;
}
inline void thrust(int i) {
for (int j = height; j > 0; j--) eval(i >> j);
}
//*
void set(int i, S x) { seg[i + m] = x; }
void build() {
for (int i = m - 1; i > 0; i--) seg[i] = op(seg[2 * i], seg[2 * i + 1]);
}
//*/
void update(int i, S x) {
i += m;
thrust(i);
seg[i] = x;
lazy[i] = id;
recalc(i);
}
void apply(int l, int r, const F &x) {
l = max(l, 0), r = min(r, n);
if (l >= r) return;
l += m, r += m;
thrust(l), thrust(r - 1);
int a = l, b = r;
while (l < r) {
if (l & 1) lazy[l] = composition(x, lazy[l]), l++;
if (r & 1) r--, lazy[r] = composition(x, lazy[r]);
l >>= 1, r >>= 1;
}
recalc(a), recalc(b - 1);
}
S query(int l, int r) {
l = max(l, 0), r = min(r, n);
if (l >= r) return e;
l += m, r += m;
thrust(l), thrust(r - 1);
S L = e, R = e;
while (l < r) {
if (l & 1) L = op(L, reflect(l++));
if (r & 1) R = op(reflect(--r), R);
l >>= 1, r >>= 1;
}
return op(L, R);
}
S all_() { return query(0, n); }
S operator[](int i) { return query(i, i + 1); }
template <typename C>
int find_subtree(int i, const C &check, S &x, int type) {
while (i < m) {
eval(i);
S nxt = type ? op(reflect(2 * i + type), x) : op(x, reflect(2 * i + type));
if (check(nxt)) {
i = 2 * i + type;
} else {
x = nxt;
i = 2 * i + (type ^ 1);
}
}
return i - m;
}
// check(区間 [l,r] での演算結果) を満たす最小の r (なければ n)
template <typename C>
int find_first(int l, const C &check) {
S L = e;
int a = l + m, b = 2 * m;
thrust(a);
while (a < b) {
if (a & 1) {
S nxt = op(L, reflect(a));
if (check(nxt)) return find_subtree(a, check, L, 0);
L = nxt;
a++;
}
a >>= 1, b >>= 1;
}
return n;
}
// check(区間 [l,r) での演算結果) を満たす最大の l (なければ -1)
template <typename C>
int find_last(int r, const C &check) {
S R = e;
int a = m, b = r + m;
thrust(b - 1);
while (a < b) {
if ((b & 1) || a == 1) {
S nxt = op(reflect(--b), R);
if (check(nxt)) return find_subtree(b, check, R, 1);
R = nxt;
}
a >>= 1, b >>= 1;
}
return -1;
}
};
struct S {
long long mi, cnt;
S(long long mi, long long cnt) : mi(mi), cnt(cnt) {}
};
using F = long long;
S op(S a, S b) {
if (a.mi < b.mi) return a;
if (a.mi > b.mi) return b;
return {a.mi, a.cnt + b.cnt};
}
S mapping(F f, S x) {
return {x.mi + f, x.cnt};
}
F composition(F f, F g) {
return f + g;
}
S e = S(2e18, 0);
F id = 0;
void solve() {
int n, q;
cin >> n >> q;
vector<S> ini(n - 1, {0, 1});
Lazy_segtree<S, F> seg(ini, op, mapping, composition, e, id);
vector<int> l(q), r(q);
rep(i, q) {
int t;
cin >> t;
if (t == 1) {
cin >> l[i] >> r[i];
l[i]--, r[i]--;
seg.apply(l[i], r[i], 1);
}
if (t == 2) {
int id;
cin >> id;
id--;
seg.apply(l[id], r[id], -1);
}
if (t == 3) {
cout << 1 + seg.all_().cnt << endl;
}
// rep(i, n - 1) {
// cout << seg[i].mi << " ";
// }
// cout << endl;
}
}
int main() {
int t;
// cin >> t;
t = 1;
while (t--) {
solve();
}
}
seren