結果
| 問題 |
No.876 Range Compress Query
|
| コンテスト | |
| ユーザー |
yosupot
|
| 提出日時 | 2019-09-06 22:46:48 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 64 ms / 2,000 ms |
| コード長 | 6,084 bytes |
| コンパイル時間 | 2,050 ms |
| コンパイル使用メモリ | 198,480 KB |
| 最終ジャッジ日時 | 2025-01-07 16:55:35 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 18 |
ソースコード
//#pragma GCC optimize("Ofast")
//#pragma GCC target("avx")
//#undef LOCAL
#include <bits/stdc++.h>
using namespace std;
using uint = unsigned int;
using ll = long long;
using ull = unsigned long long;
constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n - 1); }
template <class T> using V = vector<T>;
template <class T> using VV = V<V<T>>;
#ifdef LOCAL
struct PrettyOS {
ostream& os;
bool first;
template <class T> auto operator<<(T&& x) {
if (!first) os << ", ";
first = false;
os << x;
return *this;
}
};
template <class... T> void dbg0(T&&... t) {
(PrettyOS{cerr, true} << ... << t);
}
#define dbg(...) \
do { \
cerr << __LINE__ << " : " << #__VA_ARGS__ << " = "; \
dbg0(__VA_ARGS__); \
cerr << endl; \
} while (false);
#else
#define dbg(...)
#endif
template <class T, class U>
ostream& operator<<(ostream& os, const pair<T, U>& p) {
return os << "P(" << p.first << ", " << p.second << ")";
}
template <class T> ostream& operator<<(ostream& os, const V<T>& v) {
os << "[";
for (auto d : v) os << d << ", ";
return os << "]";
}
template <class D, class Op> struct SimpleSeg {
D e;
Op op;
int sz, lg; // size(extended to 2^i), lg
V<D> d;
SimpleSeg(const V<D>& v, D _e, Op _op) : e(_e), op(_op) {
int n = int(v.size());
lg = 1;
while ((1 << lg) < n) lg++;
sz = 1 << lg;
d = V<D>(2 * sz, e);
for (int i = 0; i < n; i++) d[sz + i] = v[i];
for (int i = sz - 1; i >= 0; i--) {
update(i);
}
}
void update(int k) { d[k] = op(d[2 * k], d[2 * k + 1]); }
void set(int p, D x) {
p += sz;
d[p] = x;
for (int i = 1; i <= lg; i++) update(p >> i);
}
D single(int p) { return d[p + sz]; }
D sum(int a, int b) {
D sml = e, smr = e;
a += sz;
b += sz;
while (a < b) {
if (a & 1) sml = op(sml, d[a++]);
if (b & 1) smr = op(d[--b], smr);
a >>= 1;
b >>= 1;
}
return op(sml, smr);
}
};
template <class D, class Op>
SimpleSeg<D, Op> get_simple_seg(V<D> v, D e, Op op) {
return SimpleSeg<D, Op>(v, e, op);
}
template <class D, class L, class OpDD, class OpDL, class OpLL> struct SegTree {
D e_d;
L e_l;
OpDD op_dd;
OpDL op_dl;
OpLL op_ll;
int sz, lg; //(2^lgに拡張後の)サイズ, lg
V<D> d;
V<L> lz;
SegTree(const V<D>& v,
D _e_d,
L _e_l,
OpDD _op_dd,
OpDL _op_dl,
OpLL _op_ll)
: e_d(_e_d), e_l(_e_l), op_dd(_op_dd), op_dl(_op_dl), op_ll(_op_ll) {
int n = int(v.size());
lg = 1;
while ((1 << lg) < n) lg++;
sz = 1 << lg;
d = V<D>(2 * sz, e_d);
lz = V<L>(2 * sz, e_l);
for (int i = 0; i < n; i++) d[sz + i] = v[i];
for (int i = sz - 1; i >= 0; i--) {
update(i);
}
}
void all_add(int k, L x) {
d[k] = op_dl(d[k], x);
lz[k] = op_ll(lz[k], x);
}
void push(int k) {
all_add(2 * k, lz[k]);
all_add(2 * k + 1, lz[k]);
lz[k] = e_l;
}
void update(int k) { d[k] = op_dd(d[2 * k], d[2 * k + 1]); }
void set(int p, D x) {
p += sz;
for (int i = lg; i >= 1; i--) push(p >> i);
d[p] = x;
for (int i = 1; i <= lg; i++) update(p >> i);
}
void add(int a, int b, L x, int l, int r, int k) {
if (b <= l || r <= a) return;
if (a <= l && r <= b) {
all_add(k, x);
return;
}
push(k);
int mid = (l + r) / 2;
add(a, b, x, l, mid, 2 * k);
add(a, b, x, mid, r, 2 * k + 1);
update(k);
}
void add(int a, int b, L x) { add(a, b, x, 0, sz, 1); }
D single(int p) {
p += sz;
for (int i = lg; i >= 1; i--) push(p >> i);
return d[p];
}
D sum(int a, int b, int l, int r, int k) {
if (b <= l || r <= a) return e_d;
if (a <= l && r <= b) return d[k];
push(k);
int mid = (l + r) / 2;
return op_dd(sum(a, b, l, mid, 2 * k), sum(a, b, mid, r, 2 * k + 1));
}
D sum(int a, int b) { return sum(a, b, 0, sz, 1); }
};
template <class D, class L, class OpDD, class OpDL, class OpLL>
SegTree<D, L, OpDD, OpDL, OpLL> get_seg(V<D> v,
D e_d,
L e_l,
OpDD op_dd,
OpDL op_dl,
OpLL op_ll) {
return SegTree<D, L, OpDD, OpDL, OpLL>(v, e_d, e_l, op_dd, op_dl, op_ll);
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, q;
cin >> n >> q;
using P = pair<ll, ll>;
V<P> a(n);
for (int i = 0; i < n; i++) {
ll x;
cin >> x;
a[i].first += x;
if (i) a[i - 1].first -= x;
}
for (int i = 0; i < n; i++) {
a[i].second = (a[i].first != 0);
}
auto seg = get_simple_seg(a, P(0, 0), [&](P x, P y) {
return P(-1, x.second + y.second);
});
dbg(a);
for (int ph = 0; ph < q; ph++) {
int ty, l, r;
cin >> ty >> l >> r; l--;
if (ty == 1) {
ll x;
cin >> x;
if (l) {
P p = seg.single(l - 1);
p.first -= x;
p.second = (p.first != 0);
seg.set(l - 1, p);
}
P p = seg.single(r - 1);
p.first += x;
p.second = (p.first != 0);
seg.set(r - 1, p);
} else {
cout << 1 + seg.sum(l, r - 1).second << "\n";
}
/* for (int i = 0; i < n; i++) {
dbg(seg.single(i));
}
dbg("#");*/
}
return 0;
}
yosupot