Submission #605066

#	Time	Username	Problem	Language	Result	Execution time	Memory
605066		sysia	Treatment Project (JOI20_treatment)	C++17	35 / 100	3043 ms	10540 KiB

treatment

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

void __print(int x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ", "; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? ", " : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif

#define int long long
const int oo = 1e18, K = 30;

struct project{
	int t, l, r, c; 
	pair<int, int>L, R;
	void read(){
		cin >> t >> l >> r >> c;
		r++;
		L = {t-l, l+t};
		R = {t-r, r+t};
		// debug(L, R);
	}
};

void solve(){
	int n, m; cin >> n >> m;
	vector<project>a(m);
	for (int i = 0; i<m; i++) a[i].read();
	vector<int>dist(m, oo);
	set<pair<int, int>>s;
	for (int i = 0; i<m; i++){
		if (a[i].l == 1){
			dist[i] = a[i].c;
			s.insert({a[i].c, i});
		}
	}
	while (s.size()){
		int v = s.begin()->second;
		int d = s.begin()->first;
		s.erase(s.begin());
		if (dist[v] < d) continue;
		for (int x = 0; x<m; x++){
			if (a[x].L.first >= a[v].R.first && a[x].L.second <= a[v].R.second){
				if (dist[x] > d + a[x].c){
					dist[x] = d+a[x].c;
					s.insert({dist[x], x});
				}
			}
		}
	}

	int ans = oo;
	for (int i = 0; i<m; i++){
		if (a[i].r == n+1){
			// debug(i, dist[i]);
			ans = min(ans, dist[i]);
		}
	}
	if (ans == oo) cout << "-1\n";
	else cout << ans << "\n";
}

int32_t main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);

	solve();
	
	return 0;
}

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