結果
| 問題 |
No.1675 Strange Minimum Query
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-09-10 22:13:22 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 243 ms / 2,000 ms |
| コード長 | 4,316 bytes |
| コンパイル時間 | 2,521 ms |
| コンパイル使用メモリ | 214,328 KB |
| 最終ジャッジ日時 | 2025-01-24 11:07:39 |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 34 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
template<class T> using V = vector<T>;
using VI = V<int>;
using VL = V<ll>;
using VS = V<string>;
template<class T> using PQ = priority_queue<T, V<T>, greater<T>>;
using graph = V<VI>;
template<class T> using w_graph = V<V<pair<int, T>>>;
#define FOR(i,a,n) for(int i=(a);i<(n);++i)
#define eFOR(i,a,n) for(int i=(a);i<=(n);++i)
#define rFOR(i,a,n) for(int i=(n)-1;i>=(a);--i)
#define erFOR(i,a,n) for(int i=(n);i>=(a);--i)
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define out(y,x) ((y)<0||h<=(y)||(x)<0||w<=(x))
#ifdef _DEBUG
#define line cout << "-----------------------------\n"
#define stop system("pause")
#endif
constexpr ll INF = 1000000000;
constexpr ll LLINF = 1LL << 61;
constexpr ll mod = 1000000007;
constexpr ll MOD = 998244353;
constexpr ld eps = 1e-10;
template<class T>inline bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; }return false; }
template<class T>inline bool chmin(T& a, const T& b) { if (a > b) { a = b; return true; }return false; }
inline void init() { cin.tie(nullptr); cout.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); }
template<class T>inline istream& operator>>(istream& is, V<T>& v) { for (auto& a : v)is >> a; return is; }
template<class T, class U>inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
template<class T>inline V<T> vec(size_t a) { return V<T>(a); }
template<class T>inline V<T> defvec(T def, size_t a) { return V<T>(a, def); }
template<class T, class... Ts>inline auto vec(size_t a, Ts... ts) { return V<decltype(vec<T>(ts...))>(a, vec<T>(ts...)); }
template<class T, class... Ts>inline auto defvec(T def, size_t a, Ts... ts) { return V<decltype(defvec<T>(def, ts...))>(a, defvec<T>(def, ts...)); }
template<class T>inline void print(const T& a) { cout << a << "\n"; }
template<class T, class... Ts>inline void print(const T& a, const Ts&... ts) { cout << a << " "; print(ts...); }
template<class T>inline void print(const V<T>& v) { for (int i = 0; i < v.size(); ++i)cout << v[i] << (i == v.size() - 1 ? "\n" : " "); }
template<class T>inline void print(const V<V<T>>& v) { for (auto& a : v)print(a); }
template<class T>inline T sum(const V<T>& a, int l, int r) { return 0 <= l && l <= r && r < a.size() ? a[r] - (l == 0 ? 0 : a[l - 1]) : 0; }
template<class T>inline void END(T s) { print(s); exit(0); }
void END() { exit(0); }
template<class Op> class SegmentTree {
using T = typename Op::T;
int len, n;
vector<T> dat;
public:
SegmentTree(const int _n) : n(_n) {
for (len = 1; len < n; len <<= 1);
dat.resize(len << 1, Op::unit);
}
SegmentTree(const vector<T>& v) : n(v.size()) {
for (len = 1; len < n; len <<= 1);
dat.resize(len << 1, Op::unit);
for (int i = 0; i < n; ++i)dat[i + len] = v[i];
for (int i = len - 1; 0 < i; --i)
dat[i] = Op::merge(dat[i << 1], dat[i << 1 | 1]);
}
inline void update(int idx, const T a) {
idx += len;
dat[idx] = Op::update(dat[idx], a);
for (idx >>= 1; 0 < idx; idx >>= 1)
dat[idx] = Op::merge(dat[idx << 1], dat[idx << 1 | 1]);
}
inline T value(int l, int r) {
T vl = Op::unit, vr = Op::unit;
for (l += len, r += len; l < r; l >>= 1, r >>= 1) {
if (l & 1)vl = Op::merge(vl, dat[l++]);
if (r & 1)vr = Op::merge(dat[--r], vr);
}
return Op::merge(vl, vr);
}
inline T operator[](int idx) { return dat[idx + len]; }
};
template<class Type> struct node {
using T = Type;
inline static T unit = mod;
inline static T merge(T vl, T vr) { return min(vl, vr); }
inline static T update(T vl, T vr) { return vr; }
};
int main() {
init();
int n, q; cin >> n >> q;
V<tuple<int, int, int>> blr(q);
for (auto& [b, l, r] : blr) {
cin >> l >> r >> b;
--l;
}
sort(rall(blr));
set<int> se;
eFOR(i, 0, n)se.insert(i);
VI a(n, mod);
SegmentTree<node<int>> seg(n);
for (auto [b, l, r] : blr) {
int cnt = seg.value(l, r) == b;
for (int i = *se.lower_bound(l); i < r; se.erase(i), i = *se.lower_bound(i)) {
if (a[i] != mod)continue;
a[i] = b;
seg.update(i, b);
++cnt;
}
if (cnt == 0)END(-1);
}
FOR(i, 0, n)if (a[i] == mod)a[i] = INF;
print(a);
return 0;
}