Submission #854273

#	Time	Username	Problem	Language	Result	Execution time	Memory
854273		denniskim	Treatment Project (JOI20_treatment)	C++17	0 / 100	2 ms	856 KiB

treatment

#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
typedef __int128 lll;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ld, ld> pld;
#define MAX 9223372036854775807LL
#define MIN -9223372036854775807LL
#define INF 0x3f3f3f3f3f3f3f3f
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); cout << fixed; cout.precision(10);
#define sp << " "
#define en << "\n"
#define compress(v) sort(v.begin(), v.end()), v.erase(unique(v.begin(), v.end()), v.end())

struct gujo
{
	ll T, L, R, C;
};

ll n, m;
gujo a[5010];
vector<pll> vec[5010];
ll dist[5010];

int main(void)
{
	fastio
	
	cin >> n >> m;
	
	for(ll i = 1 ; i <= m ; i++)
		cin >> a[i].T >> a[i].L >> a[i].R >> a[i].C;
	
	for(ll i = 1 ; i <= m ; i++)
	{
		for(ll j = i + 1 ; j <= m ; j++)
		{
			ll L1, R1, L2, R2;
			
			if(a[i].T < a[j].T)
			{
				L1 = a[i].L + a[j].T - a[i].T;
				R1 = a[i].R - a[j].T + a[i].T;
				L2 = a[j].L;
				R2 = a[j].R;
			}
			
			else
			{
				L1 = a[j].L + a[i].T - a[j].T;
				R1 = a[j].R - a[i].T + a[j].T;
				L2 = a[i].L;
				R2 = a[i].R;
			}
			
			if(R2 < L1 - 1 || R1 < L2 - 1)
				continue;
			
			vec[i].push_back({j, a[j].C});
			vec[j].push_back({i, a[i].C});
		}
	}
	
	for(ll i = 1 ; i <= m ; i++)
		dist[i] = INF;
	
	priority_queue<pll> pq;
	
	for(ll i = 1 ; i <= m ; i++)
	{
		if(a[i].L == 1)
		{
			dist[i] = a[i].C;
			pq.push({0, i});
		}
	}
	
	while(!pq.empty())
	{
		pll qq = pq.top();
		pq.pop();
		
		for(auto &i : vec[qq.se])
		{
			if(dist[i.fi] > dist[qq.se] + i.se)
			{
				dist[i.fi] = dist[qq.se] + i.se;
				pq.push({-dist[i.fi], i.fi});
			}
		}
	}
	
	ll ans = INF;
	
	for(ll i = 1 ; i <= m ; i++)
	{
		if(a[i].R == n)
			ans = min(ans, dist[i]);
	}
	
	if(ans == INF)
		cout << -1;
	else
		cout << ans;
	
	return 0;
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 5
• Subtask 3: 0 / 30
• Subtask 4: 0 / 61