oj.uz

Submission #416282

# Submission time Handle Problem Language Result Execution time Memory
416282 2021-06-02T09:23:39 Z alishahali1382 Robot (JOI21_ho_t4) C++14
34 / 100
 3000 ms 49732 KB 
#include <bits/stdc++.h>
#pragma GCC optimize ("O2,unroll-loops")
//#pragma GCC optimize("no-stack-protector,fast-math")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

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

const int inf=1000000010;
const ll INF=1000000000000001000LL;
const int mod=1000000007;
const int MAXN=800010, LOG=20;

int n, m, k, u, v, x, y, t, a, b;
int A[MAXN], B[MAXN], C[MAXN], P[MAXN];
ll P2[MAXN], sum[MAXN];
ll dist[MAXN], ans;
bool mark[MAXN];
int col[MAXN];
vector<int> G[MAXN];
priority_queue<pll, vector<pll>, greater<pll>> pq;

inline void upd(int v, ll d){ if (dist[v]>d) pq.push({dist[v]=d, v});}

int main(){
	ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	//freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
	cin>>n>>m;
	for (int i=0; i<2*m; i++){
		cin>>u>>v>>x>>y;
		A[i]=u, B[i]=v, C[i]=x, P[i]=y, G[u].pb(i);
		swap(u, v);
		i++;
		A[i]=u, B[i]=v, C[i]=x, P[i]=y, G[u].pb(i);
	}
	for (int i=1; i<=n; i++){
		for (int j:G[i]) sum[C[j]]=0;
		for (int j:G[i]) sum[C[j]]+=P[j];
		for (int j:G[i]) P2[j]+=sum[C[j]];
	}
	memset(dist, 63, sizeof(dist));
	for (int i:G[1]){
		upd(i<<1, P2[i]-P[i]);
		upd(i<<1 | 1, P[i]);
	}
	ans=INF;
	while (pq.size()){
		int st=pq.top().second;
		pq.pop();
		if (mark[st]) continue ;
		mark[st]=1;
		int id=(st>>1), last=(st&1);
		int v=B[id];
		if (v==n) kill(dist[st]);
		if (!col[v]){
			for (int i:G[v]){
				upd(i<<1 | 1, dist[st]+P[i]);
				if (C[id]!=C[i]) upd(i<<1, dist[st]+P2[i]-P[i]);
				else if (last) upd(i<<1, dist[st]+P2[i]-P[i]-P[id]);
			}
			col[v]=C[id];
			continue ;
		}
		else{
			for (int i:G[v]){
				if (C[id]!=C[i]) upd(i<<1, dist[st]+P2[i]-P[i]);
				else if (last) upd(i<<1, dist[st]+P2[i]-P[i]-P[id]);
			}
		}
	}
	if (ans>=INF) ans=-1;
	cout<<ans<<"\n";
	
	return 0;
}

Subtask #1
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 25404 KB Output is correct
2 Correct 16 ms 25420 KB Output is correct
3 Correct 17 ms 25348 KB Output is correct
4 Correct 18 ms 25428 KB Output is correct
5 Correct 16 ms 25408 KB Output is correct
6 Correct 16 ms 25372 KB Output is correct
7 Correct 16 ms 25564 KB Output is correct
8 Correct 16 ms 25420 KB Output is correct
9 Correct 26 ms 25736 KB Output is correct
10 Correct 22 ms 25676 KB Output is correct
11 Correct 24 ms 25776 KB Output is correct
12 Correct 20 ms 25692 KB Output is correct
13 Correct 23 ms 25768 KB Output is correct
14 Correct 23 ms 25776 KB Output is correct
15 Correct 17 ms 25420 KB Output is correct
16 Correct 17 ms 25592 KB Output is correct
17 Correct 17 ms 25676 KB Output is correct
18 Correct 16 ms 25388 KB Output is correct
19 Correct 17 ms 25756 KB Output is correct
20 Correct 17 ms 25548 KB Output is correct

Subtask #2
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 35124 KB Output is correct
2 Correct 75 ms 30136 KB Output is correct
3 Correct 95 ms 34564 KB Output is correct
4 Correct 59 ms 30396 KB Output is correct
5 Execution timed out 3075 ms 49732 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #3
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 25404 KB Output is correct
2 Correct 16 ms 25420 KB Output is correct
3 Correct 17 ms 25348 KB Output is correct
4 Correct 18 ms 25428 KB Output is correct
5 Correct 16 ms 25408 KB Output is correct
6 Correct 16 ms 25372 KB Output is correct
7 Correct 16 ms 25564 KB Output is correct
8 Correct 16 ms 25420 KB Output is correct
9 Correct 26 ms 25736 KB Output is correct
10 Correct 22 ms 25676 KB Output is correct
11 Correct 24 ms 25776 KB Output is correct
12 Correct 20 ms 25692 KB Output is correct
13 Correct 23 ms 25768 KB Output is correct
14 Correct 23 ms 25776 KB Output is correct
15 Correct 17 ms 25420 KB Output is correct
16 Correct 17 ms 25592 KB Output is correct
17 Correct 17 ms 25676 KB Output is correct
18 Correct 16 ms 25388 KB Output is correct
19 Correct 17 ms 25756 KB Output is correct
20 Correct 17 ms 25548 KB Output is correct
21 Correct 138 ms 35124 KB Output is correct
22 Correct 75 ms 30136 KB Output is correct
23 Correct 95 ms 34564 KB Output is correct
24 Correct 59 ms 30396 KB Output is correct
25 Execution timed out 3075 ms 49732 KB Time limit exceeded
26 Halted 0 ms 0 KB -