Submission #420308

#	Time	Username	Problem	Language	Result	Execution time	Memory
420308		alishahali1382	Treatment Project (JOI20_treatment)	C++17	35 / 100	3039 ms	6364 KiB

treatment

#include <bits/stdc++.h>
#pragma GCC optimize("O2")
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef long double ld;
typedef pair<pii, int> piii;
#define debug(x) {cerr<<#x<<"="<<x<<"\n";}
#define debug2(x, y) {cerr<<"{"<<#x<<", "<<#y<<"}={"<<x<<", "<<y<<"}\n";}
#define debugp(p) {cerr<<#p<<"={"<<p.first<<" "<<p.second<<"}\n";}
#define debugv(abcd) {cerr<<#abcd<<": ";for (auto dcba:abcd) cerr<<dcba<<" ";cerr<<"\n";}
#define pb push_back
#define all(x) x.begin(), x.end()
#define kill(x) return cout<<x<<"\n", 0;
#define SZ(x) ((int)x.size())

const int inf=1000010000;
const ll INF=10000000000100000ll; // 1e16
const int mod=1000000007;
const int MAXN=100010;

int n, m, q, k, u, v, x, y, t;
int L[MAXN], R[MAXN], T[MAXN], C[MAXN];
int mark[MAXN];
ll dist[MAXN], ans=INF;

inline bool upd(ll &x, ll y){
	if (x<=y) return 0;
	x=y;
	return 1;
}

int main(){
	ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	memset(dist, 63, sizeof(dist));
	cin>>n>>m;
	for (int i=1; i<=m; i++){
		cin>>T[i]>>L[i]>>R[i]>>C[i];
		L[i]--;
		if (!L[i]) upd(dist[i], C[i]);
	}
	while (1){
		int v=0;
		for (int i=1; i<=m; i++) if (!mark[i] && dist[i]<dist[v]) v=i;
		if (!v) break ;
		mark[v]=1;
		for (int i=1; i<=m; i++) if (!mark[i]){
			bool ok=0;
			if (T[i]<=T[v]){
				ok=(L[i]+(T[v]-T[i])<=R[v]);
			}
			else{
				ok=(L[i]<=R[v]-(T[i]-T[v]));
			}
			if (!ok) continue ;
			upd(dist[i], dist[v]+C[i]);
		}
	}
	for (int i=1; i<=m; i++) if (R[i]==n) upd(ans, dist[i]);
	if (ans>=INF) ans=-1;
	cout<<ans<<"\n";

	return 0;
}
/*
10 5
2 5 10 3
1 1 6 5
5 2 8 3
7 6 10 4
4 1 3 1

10 5
2 6 10 3
1 1 5 5
5 2 7 3
8 6 10 4
4 1 3 1

10 5
1 5 10 4
1 1 6 5
1 4 8 3
1 6 10 3
1 1 3 1


*/

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