Submission #253587

#	Time	Username	Problem	Language	Result	Execution time	Memory
253587		MrRobot_28	Checker (COCI19_checker)	C++17	12 / 110	1155 ms	66064 KiB

checker

#include<bits/stdc++.h>
 
using namespace std;

signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int t;
	cin >> t;
	while(t--)
	{
		int n;
		cin >> n;
		string s1;
		cin >> s1;
		map <pair <int, int>, int> mp;
		for(int i = 0; i < n; i++)
		{
			mp[{i, (i + 1) % n}] = s1[i] - '0';
		}
		set <pair <pair <int, int>, int> > s;
		vector <int> pr(n);
		vector <int> nxt(n);
		for(int i = 0; i < n; i++)
		{
			pr[i] = (i - 1 + n) % n;
			nxt[i] = (i + 1) % n;
		}
		queue <pair <pair <int, int>, int> > st;
		for(int i = 0; i < n - 3; i++)
		{
			int a, b, c;
			cin >> a >> b >> c;
			a--;
			b--;
			if(nxt[nxt[a]] == b)
			{
				st.push({{a, b}, c});
			}
			else if(pr[pr[a]] == b)
			{
				st.push({{b, a}, c});
			}
			else
			{
				s.insert({{a, b}, c});
				s.insert({{b, a}, c});
			}
		}
		bool flag1 = 1;
		bool flag2 = 1;
		while(st.size() != 0)
		{
			int a = st.front().first.first;
			int b = st.front().first.second;
			int c = st.front().second;
			st.pop();
			if(nxt[nxt[a]] != b || mp.find({a, nxt[a]}) == mp.end() || mp.find({nxt[a], b}) == mp.end())
			{
				flag1 = 0;
				break;
			}
			int kol1 = mp[{a, nxt[a]}];
			int kol2 = mp[{nxt[a], b}];
			if(kol1 == kol2 || kol1 == c || kol2 == c)
			{
				flag2 = 0;
			}
			mp.erase({a, nxt[a]});
			mp.erase({nxt[a], b});
			mp[{a, b}] = c;
			nxt[a] = b;
			pr[b] = a;
			set <pair <pair <int, int>, int> > :: iterator it1, it2;
			it1 = s.lower_bound({{a, nxt[b]}, 0});
			it2 = s.lower_bound({{pr[a], b}, 0});
			if(it1 != s.end() && it2 != s.end() && it1 -> first == make_pair(a, nxt[b]) && it2 -> first == make_pair(pr[a], b))
			{
				flag1 = 0;
				break;
			}
			if(it1 != s.end() && it1 -> first == make_pair(a, nxt[b]))
			{
				st.push({{a, nxt[b]}, it1 -> second});
				s.erase({{it1 -> first.first, it1 -> first.second}, it1 -> second});
				s.erase({{it1 -> first.second, it1 -> first.first}, it1 -> second});
			}
			else if(it2 != s.end() && it2 -> first == make_pair(pr[a], b))
			{
				st.push(*it2);
				s.erase({{it2 -> first.first, it2 -> first.second}, it2 -> second});
				s.erase({{it2 -> first.second, it2 -> first.first}, it2 -> second});
			}
		}
		if(s.size() != 0)
		{
			flag1 = 0;
		}
		if(!flag1)
		{
			cout << "neispravna triangulacija\n";
		}
		else if(!flag2)
		{
			cout << "neispravno bojenje\n";
		}
		else
		{
			cout << "tocno\n";
		}
	}
	return 0;
}

• Subtask 1: 12 / 12
• Subtask 2: 0 / 17
• Subtask 3: 0 / 23
• Subtask 4: 0 / 23
• Subtask 5: 0 / 35