Submission #579491

#	Time	Username	Problem	Language	Result	Execution time	Memory
579491		gun_gan	이상한 기계 (APIO19_strange_device)	C++17	0 / 100	580 ms	55100 KiB

strange_device

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

int main()
{
	cin.tie(0) -> ios_base::sync_with_stdio(0);

	long long n, a, b;
	cin >> n >> a >> b;

	long long g = a * b / gcd(a, b + 1);

	map<int, vector<int>> M;
	for(int i = 0; i < n; i++)
	{
		int l, r;
		cin >> l >> r;
		l %= g, r %= g;
		if(r < l)
		{
			M[0].push_back(r);
			M[l].push_back(g - 1);
		}
		else
		{
			M[l].push_back(r);
		}
	}

	multiset<int> S;
	vector<pair<int,int>> intervals;

	int begin = 1e9, last = 0;
	for(auto &[st, v] : M)
	{	
		
		while(!S.empty() && *S.begin() < st)
		{
			S.erase(S.begin());
		}

		if(S.empty() && begin != 1e9)
		{
			intervals.push_back({begin, last});
			begin = 1e9;
			last = 0;
		}

		begin = min(begin, st);

		for(auto i : v)
		{
			S.insert(i);
			last = max(last, i);
		}

	}

	if(!S.empty() && begin != 1e9)
	{
		while(!S.empty())
		{
			last = max(last, *S.begin());
			S.erase(S.begin());
		}

		intervals.push_back({begin, last});
	}

	long long ans = 0;
	for(auto [l, r] : intervals) 
	{
		ans += r - l + 1;
	}
	cout << ans;

}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 5
• Subtask 3: 0 / 5
• Subtask 4: 0 / 5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 30