Submission #261247

#	Time	Username	Problem	Language	Result	Execution time	Memory
261247		Saboon	Treatment Project (JOI20_treatment)	C++14	5 / 100	3060 ms	6136 KiB

treatment

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll maxn = 2e5 + 10;
 
ll T[maxn], L[maxn], R[maxn], C[maxn], p[maxn], dp[maxn];
 
int main(){
	ios_base::sync_with_stdio(false);
	ll n, m;
	cin >> n >> m;
	for (ll i = 1; i <= m; i++)
		cin >> T[i] >> L[i] >> R[i] >> C[i];
	for (ll i = 1; i <= m; i++)
		p[i] = i;
	memset(dp, -1, sizeof dp);
	for (ll _ = 0; _ < m; _++){
		for (ll iit = 1; iit <= m; iit++){
			ll i = p[iit];
			if (L[i] == 1)
				dp[i] = C[i];
			for (ll jit = 1; jit <= m; jit++){
				ll j = p[jit];
				if (abs(T[i]-T[j]) <= R[j]-L[i]+1 and dp[j] != -1)
					if (dp[i] == -1 or dp[i] > dp[j] + C[i])
						dp[i] = dp[j] + C[i];
			}
		}
	}
	ll answer = -1;
	for (ll i = 1; i <= m; i++)
		if (R[i] == n and dp[i] != -1 and (answer == -1 or answer > dp[i]))
			answer = dp[i];
	cout << answer << endl;
}

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