Submission #855558

#	Time	Username	Problem	Language	Result	Execution time	Memory
855558		vjudge1	Crossing (JOI21_crossing)	C++17	0 / 100	560 ms	1000 KiB

Main

#include <bits/stdc++.h>
#include <fstream>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/trie_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
template<class A, class B>
ostream& operator<<(ostream& o, const pair<A, B>& p) {return o << '(' << p.first << ", " << p.second << ')';}
template<size_t Index = 0, typename... Types>
ostream& printTupleElements(ostream& o, const tuple<Types...>& t) {if constexpr (Index < sizeof...(Types)){if(Index > 0){o << ", ";}o << get<Index>(t);printTupleElements<Index + 1>(o, t);}return o;}
template<typename... Types>
ostream& operator<<(ostream& o, const tuple<Types...>& t){o << "(";printTupleElements(o, t);return o << ")";}
template<class T>
auto operator<<(ostream& o, const T& x) -> decltype(x.end(), o){o << '{';bool first = true;for (const auto& e : x){if (!first){o << ", ";}o << e;first = false;} return o << '}';}
#define DEBUG
#ifdef DEBUG
#define fastio()
#define debug(x...) cerr << "[" #x "]: ", [](auto... $) {((cerr << $ << "; "), ...); }(x), cerr << '\n'
#define check(x) if (!(x)) { cerr << "Check failed: " << #x << " in line " << __LINE__ << endl; exit(1); }
#else
#define fastio() ios_base::sync_with_stdio(0); cin.tie(0);
#define debug(...)
#define check(x) 
#endif
typedef long long ll;
#define pi pair<int, int>
#define pll pair<ll, ll>
#define st first
#define nd second
#define vi vector<int>
#define vll vector<ll>
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
void wypisz(string a) {
	for(auto x : a) {
		cout << x;
	}
	cout << '\n';
}
vector<char>lit = {'J', 'O', 'I'};
string comb(string a, string b) {
	string res = "";
	for(int i = 0; i < sz(a); i++) {
		if(a[i] == b[i]) {
			res += a[i];
		}
		else {
			for(auto x : lit) {
				if(x != a[i] && x != b[i]) {
					res += x;
				}
			}
		}
	}
	return res;
}
set<tuple<int, int, char> > getprz(string a) {
	set<tuple<int, int, char> >res;
	for(int i = 0; i < sz(a); i++) {
		int r = i;
		while(r + 1 < sz(a) && a[r + 1] == a[i]) {
			r++;
		}
		res.insert(make_tuple(i, r, a[i]));
		i = r;
	}
	return res;
}
void solve() {
	//ifstream cin("nazwa.in");
	//ofstream cout("nazwa.out");
	int n;
	cin >> n;
	string a, b, c;
	cin >> a >> b >> c;
	set<string>kt1;
	for(int mask = 1; mask < (1 << 3); mask++) {
		vector<string>per;
		if(mask & (1 << 0)) {
			per.eb(a);
		}
		if(mask & (1 << 1)) {	
			per.eb(b);
		}
		if(mask & (1 << 2)) {
			per.eb(c);
		}
		sort(all(per));
		do {
			string akt = per[0];
			for(int i = 1; i < sz(per); i++) {
				akt = comb(akt, per[i]);
			}
			kt1.insert(akt);
		}while(next_permutation(all(per)));
	}
	vector<string>kt;
	for(auto x : kt1) {
		kt.eb(x);
	}
	vector<set<tuple<int, int, char> > >prz(sz(kt));
	vector<set<tuple<int, int, char> > >przroz(sz(kt));
	for(int i = 0; i < sz(kt); i++) {
		prz[i] = getprz(kt[i]);
		//wypisz(kt[i]);
		//debug(prz[i]);
	}
	int t;
	cin >> t;
	string s;
	cin >> s;
	set<tuple<int, int, char> >przs = getprz(s);
	for(int i = 0; i < sz(kt); i++) {
		for(auto x : przs) {
			if(prz[i].find(x) == prz[i].end()) {
				przroz[i].insert(x);
			}
		}
	}
	while(t >= 0) {
		bool czy = 0;
		//debug(przs);
		for(int i = 0; i < sz(kt); i++) {
			//debug(prz[i], przroz[i]);
			if(!sz(przroz[i])) {
				czy = 1;
			}
		}
		if(czy) {
			cout << "Yes\n";
		}
		else {
			cout << "No\n";
		}
		if(t > 0) {
			int l, r;
			char zn;
			cin >> l >> r >> zn;
			l--, r--;
			auto it = przs.upper_bound(make_tuple(l, 1e9, 1e9));
			it--;
			set<tuple<int, int, char> >dod;
			set<tuple<int, int, char> >us;
			while(it != przs.end()) {
				auto [lp, rp, z] = (*it);
				if(lp > r) {
					break;
				}
				if(lp < l) {
					dod.insert(make_tuple(lp, l - 1, z));
				}
				if(rp > r) {
					dod.insert(make_tuple(r + 1, rp, z));
				}
				us.insert(*it);
				for(int i = 0; i < sz(kt); i++) {
					if(przroz[i].find(*it) != przroz[i].end()) {
						przroz[i].erase(*it);
					}
				}
				it++;
			}
			dod.insert(make_tuple(l, r, zn));
			for(auto x : us) {
				przs.erase(x);
			}
			for(auto x : dod) {
				przs.insert(x);
				for(int i = 0; i < sz(kt); i++) {
					if(prz[i].find(x) == prz[i].end()) {
						przroz[i].insert(x);
					}
				}
			}
		}
		t--;
	}
}
int main() {
	fastio();
	int t = 1;
	//cin >> t;
	while(t--) {
		solve();
	}
}

• Subtask 1: 0 / 3
• Subtask 2: 0 / 23
• Subtask 3: 0 / 23
• Subtask 4: 0 / 51