結果
問題 | No.1222 -101 |
ユーザー |
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提出日時 | 2020-09-04 23:08:51 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 462 ms / 2,000 ms |
コード長 | 8,135 bytes |
コンパイル時間 | 2,281 ms |
コンパイル使用メモリ | 186,952 KB |
実行使用メモリ | 34,124 KB |
最終ジャッジ日時 | 2024-11-26 20:57:57 |
合計ジャッジ時間 | 7,855 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 35 |
ソースコード
#include <bits/stdc++.h>using namespace std;#define DEBUG(x) cerr<<#x<<": "<<x<<endl;#define DEBUG_VEC(v) cerr<<#v<<":";for(int i=0;i<v.size();i++) cerr<<" "<<v[i]; cerr<<endl;#define DEBUG_MAT(v) cerr<<#v<<endl;for(int i=0;i<v.size();i++){for(int j=0;j<v[i].size();j++) {cerr<<v[i][j]<<" ";}cerr<<endl;}typedef long long ll;#define int ll#define vi vector<int>#define vl vector<ll>#define vii vector< vector<int> >#define vll vector< vector<ll> >#define vs vector<string>#define pii pair<int,int>#define pis pair<int,string>#define psi pair<string,int>#define pll pair<ll,ll>template<class S, class T> pair<S, T> operator+(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first + t.first, s.second + t.second); }template<class S, class T> pair<S, T> operator-(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first - t.first, s.second - t.second); }template<class S, class T> ostream& operator<<(ostream& os, pair<S, T> p) { os << "(" << p.first << ", " << p.second << ")"; return os; }#define X first#define Y second#define rep(i,n) for(int i=0;i<(int)(n);i++)#define rep1(i,n) for(int i=1;i<=(int)(n);i++)#define rrep(i,n) for(int i=(int)(n)-1;i>=0;i--)#define rrep1(i,n) for(int i=(int)(n);i>0;i--)#define REP(i,a,b) for(int i=a;i<b;i++)#define in(x, a, b) (a <= x && x < b)#define all(c) c.begin(),c.end()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 (a>b) { a = b; return 1; } return 0; }#define UNIQUE(v) v.erase(std::unique(v.begin(), v.end()), v.end());const ll inf = 1000000001;const ll INF = (ll)1e18 + 1;const long double pi = 3.1415926535897932384626433832795028841971L;#define Sp(p) cout<<setprecision(25)<< fixed<<p<<endl;// int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};// int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 };vi dx = {1, 0, -1, 0}, dy = {0, 1, 0, -1};// vi dx2 = { 1,1,0,-1,-1,-1,0,1 }, dy2 = { 0,1,1,1,0,-1,-1,-1 };#define fio() cin.tie(0); ios::sync_with_stdio(false);const ll MOD = 1000000007;// const ll MOD = 998244353;// #define mp make_pair//#define endl '\n'const int MAXN = 555555;vl fact(MAXN);vl rfact(MAXN);ll mod_pow(ll x, ll p, ll M = MOD) {if (p < 0) {x = mod_pow(x, M - 2, M);p = -p;}ll a = 1;while (p) {if (p % 2)a = a*x%M;x = x*x%M;p /= 2;}return a;}ll mod_inverse(ll a, ll M = MOD) {return mod_pow(a, M - 2, M);}void set_fact(ll n, ll M = MOD) {fact[0] = 1;for (ll i = 1; i <= n; i++) {fact[i] = i * fact[i - 1] % M;}rfact[n] = mod_inverse(fact[n], M);for (ll i = n - 1; i >= 0; i--) {rfact[i] = (i + 1) * rfact[i + 1] % M;}}//http://drken1215.hatenablog.com/entry/2018/06/08/210000//n���傫��fact���v�Z�ł��Ȃ��Ƃ��̂ق��̌v�Z���@�ɂ·��ď����Ă���ll nCr(ll n, ll r, ll M = MOD) {if (r > n) return 0;assert(fact[2] == 2);ll ret = fact[n];if (rfact[r] == 0) {rfact[r] = mod_inverse(fact[r], M);}ret = (ret*rfact[r]) % M;if (rfact[n - r] == 0) {rfact[n - r] = mod_inverse(fact[n - r], M);}ret = (ret*rfact[n - r]) % M;return ret;}ll nHr(ll n, ll r) {return nCr(n+r-1, r);}template <typename T1, typename T2>class LazySegmentTree {public:using F = function<T1(T1&, T1&)>; // query_funcusing G = function<T2(T2&, T2&)>; // update_funcusing H = function<T1(T1&, T2&, int, int)>; // lazy to node (node, lazy, left, right)int n;vector<T1> node;vector<T2> lazy;T1 e1;T2 e2;F query_func;G update_func;H eval_func;LazySegmentTree(vector<T1> a, F query_func, G update_func, H eval_func, T1 e1, T2 e2):query_func(query_func), update_func(update_func), eval_func(eval_func), e1(e1), e2(e2){int _n = a.size();n = 1; while (n < _n) n *= 2;node.resize(2 * n - 1, e1);lazy.resize(2 * n - 1, e2);for (int i = 0; i < _n; i++) node[i + n - 1] = a[i];for (int i = n - 2; i >= 0; i--) {node[i] = query_func(node[i * 2 + 1], node[i * 2 + 2]);}}// k�Ԗڂ̃m�[�h�ɂ·��Ēx���]�����s��inline void eval(int k, int l, int r) {if (lazy[k] != e2) { // Changenode[k] = eval_func(node[k], lazy[k], l, r);if (r - l > 1) {lazy[2 * k + 1] = update_func(lazy[2*k + 1], lazy[k]);lazy[2 * k + 2] = update_func(lazy[2*k + 2], lazy[k]);}lazy[k] = e2; // Change}}// [a, b)��x�ɂ���void update(int a, int b, T2 x, int k, int l, int r) {// k �Ԗڂ̃m�[�h�ɑ��Ēx���]�����s��eval(k, l, r);if (b <= l || r <= a) return;if (a <= l && r <= b) {lazy[k] = update_func(lazy[k], x);eval(k, l, r);}else {update(a, b, x, 2 * k + 1, l, (l + r) / 2);update(a, b, x, 2 * k + 2, (l + r) / 2, r);node[k] = query_func(node[2 * k + 1], node[2 * k + 2]);}}T1 query(int a, int b, int k, int l, int r) {eval(k, l, r);if (b <= l || r <= a) return e1;if (a <= l && r <= b) return node[k];T1 resl = query(a, b, 2 * k + 1, l, (l + r) / 2);T1 resr = query(a, b, 2 * k + 2, (l + r) / 2, r);return query_func(resl, resr);}};ll f(ll a, ll b) {return (a + b) % MOD;}ll g(ll a, ll b) {return a * b % MOD;}ll h(ll a, ll b, int l, int r) {return a * b % MOD;}signed main() {fio();int n, m;cin >> n >> m;using P = pair<pii, int>;vector<P> lrp(m);vi non_zero(n + 1);int cnt = 0;rep (i, m) {int l, r, p;cin >> l >> r >> p;l--;lrp[i] = P(pii(l, r), p);if (p != 0) {non_zero[l]++;non_zero[r]--;cnt++;}}rep (i, n) {non_zero[i + 1] += non_zero[i];}ll ans = 1;int temp = 0;rep (i, n) {if (non_zero[i] != 0) temp++;}ans = mod_pow(2, temp - cnt);// DEBUG(ans);vl dp(n + 1, 1);LazySegmentTree<ll, ll> seg(dp, f, g, h, 0, 1);vector<pii> lr;rep (i, m) {if (lrp[i].second == 0) lr.push_back(lrp[i].first);}sort(all(lr), [](pii lr1, pii lr2) {return lr1.second < lr2.second;});// DEBUG_VEC(lr);// DEBUG_VEC(non_zero);int al = 0;rep (i, lr.size()) {int l = lr[i].first, r = lr[i].second;for (int j = al; j < r; j++) {if (non_zero[j] != 0) {seg.update(j + 1, j + 2, 0, 0, 0, seg.n);continue;}// if (j < l) {// seg.update(j + 1, j + 2, 0, 0, 0, seg.n);// continue;// }ll wa = seg.query(0, j + 1, 0, 0, seg.n);seg.update(j + 1, j + 2, wa, 0, 0, seg.n);seg.update(0, j + 1, 2, 0, 0, seg.n);}seg.update(0, l + 1, 0, 0, 0, seg.n);al = r;}for (int j = al; j < n; j++) {if (non_zero[j] != 0) {seg.update(j + 1, j + 2, 0, 0, 0, seg.n);continue;}ll wa = seg.query(0, j + 1, 0, 0, seg.n);seg.update(j + 1, j + 2, wa, 0, 0, seg.n);seg.update(0, j + 1, 2, 0, 0, seg.n);}ll wa = seg.query(0, seg.n, 0, 0, seg.n);(ans *= wa) %= MOD;cout << ans << endl;}// vector<double> fact(111111);// void solve() {// int n, m, k;// cin >> n >> m >> k;// double f = m, s = n - k + 1;// for (int i = k; i >= 1; i--) {// f *= (double)n / i;// s *= m;// if (f > s) break;// }// // double f = m * fact[n] / (fact[k] * fact[n - k]);// // double s = (n - k + 1) * pow(m, k);// // DEBUG(make_pair(f, s));// if (f > s) cout << "Straight" << endl;// else cout << "Flush" << endl;// }// signed main() {// fio();// fact[0] = 1;// rep (i, 111100) {// fact[i + 1] = fact[i] * (i + 1);// }// int q;// cin >> q;// while (q--) solve();// }