oj.uz

Submission #865968

# Submission time Handle Problem Language Result Execution time Memory
865968 2023-10-25T07:43:47 Z jhinezeal123 Commuter Pass (JOI18_commuter_pass) C++17
100 / 100
 216 ms 26176 KB 
#include <bits/stdc++.h>
#define int long long
#define ii pair<int, int>
#define iii pair<int,ii>
#define vii vector<ii>
#define fi first
#define se second
#define endl '\n'
using namespace std;
const double eps = 0.000001;
const int mod = 1000000007;
const int N = 100001;
const int MATRIX_SIZE = 3;
int n,m,s,t,u,v,du[N],dv[N],ds[N],dpu[N],dpv[N];
vector <ii> G[N];
bool vi[N];
void Dijk(int x,int *dist){
	fill(dist+1,dist+n+1,1e18);
	dist[x]=0;
	priority_queue <ii,vector <ii>, greater <ii>> xet;
	xet.push({0,x});
	while (xet.size()){
		ii tam=xet.top();
		xet.pop();
		if (tam.fi>dist[tam.se]) continue;
		for (auto htc:G[tam.se]){
			if (dist[htc.fi]>htc.se+tam.fi){
				// cout<<htc.fi<<' '<<htc.se<<' '<<tam.fi<<endl;
				dist[htc.fi]=htc.se+tam.fi;
				xet.push({dist[htc.fi],htc.fi});
			}
		}
	}
	// dist[0]=2;
}
void Dp(){
	fill(ds+1,ds+n+1,1e18);
	ds[s]=0;
	fill(dpu,dpu+n+1,1e18);
	fill(dpv,dpv+n+1,1e18);
	dpu[s]=du[s];
	dpv[s]=dv[s];
	priority_queue <iii,vector <iii>,greater<iii>> xet;
	xet.push({0,{s,0}});
	while (xet.size()){
		iii tam=xet.top();
		int dist=tam.fi;
		int node=tam.se.fi;
		int par=tam.se.se;
		xet.pop();
		if (dist>ds[node]) continue;

		if (dpu[node]+dpv[node]>min(dpu[par],du[node])+min(dpv[par],dv[node])){
			dpu[node]=min(dpu[par],du[node]);
			dpv[node]=min(dpv[par],dv[node]);
		}
		// cout<<node<<' '<<dpu[node]<<' '<<dpv[node]<<' '<<par<<endl;
		if (!vi[node]){
			vi[node]=true;
			for (auto x:G[node]){
				if (ds[x.fi]>=x.se+dist){
					ds[x.fi]=x.se+dist;
					xet.push({ds[x.fi],{x.fi,node}});
				}
			}
		}
	}
}
void solve(){
	cin>>n>>m>>s>>t>>u>>v;
	for (int i=1,s1,s2,s3;i<=m;++i){
		cin>>s1>>s2>>s3;
		G[s2].push_back({s1,s3});
		G[s1].push_back({s2,s3});
	}
	Dijk(u,du);
	Dijk(v,dv);
	// cout<<du[3];
	// swap(t,s);
	Dp();
	cout<<min(dpu[t]+dpv[t],du[v]);
}
main() {
    //freopen("ok.inp","r",stdin);
	//freopen("ok.out","w",stdout);
	ios_base::sync_with_stdio(0);
	cin.tie(0);
    solve();
}

Compilation message

commuter_pass.cpp:83:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   83 | main() {
      | ^~~~

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 163 ms 25804 KB Output is correct
2 Correct 160 ms 23452 KB Output is correct
3 Correct 170 ms 23080 KB Output is correct
4 Correct 170 ms 26176 KB Output is correct
5 Correct 159 ms 23384 KB Output is correct
6 Correct 194 ms 25808 KB Output is correct
7 Correct 173 ms 23356 KB Output is correct
8 Correct 205 ms 23588 KB Output is correct
9 Correct 214 ms 23876 KB Output is correct
10 Correct 130 ms 23940 KB Output is correct
11 Correct 50 ms 14072 KB Output is correct
12 Correct 167 ms 23804 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 173 ms 24000 KB Output is correct
2 Correct 167 ms 23432 KB Output is correct
3 Correct 190 ms 23428 KB Output is correct
4 Correct 166 ms 23460 KB Output is correct
5 Correct 165 ms 23472 KB Output is correct
6 Correct 182 ms 23292 KB Output is correct
7 Correct 167 ms 23176 KB Output is correct
8 Correct 202 ms 23556 KB Output is correct
9 Correct 197 ms 23404 KB Output is correct
10 Correct 164 ms 23440 KB Output is correct
11 Correct 47 ms 14052 KB Output is correct
12 Correct 216 ms 23060 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 8540 KB Output is correct
2 Correct 1 ms 6748 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 15 ms 10620 KB Output is correct
5 Correct 6 ms 8284 KB Output is correct
6 Correct 2 ms 6744 KB Output is correct
7 Correct 3 ms 6744 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 2 ms 6748 KB Output is correct
10 Correct 6 ms 8448 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6660 KB Output is correct
14 Correct 1 ms 6748 KB Output is correct
15 Correct 2 ms 6744 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 163 ms 25804 KB Output is correct
2 Correct 160 ms 23452 KB Output is correct
3 Correct 170 ms 23080 KB Output is correct
4 Correct 170 ms 26176 KB Output is correct
5 Correct 159 ms 23384 KB Output is correct
6 Correct 194 ms 25808 KB Output is correct
7 Correct 173 ms 23356 KB Output is correct
8 Correct 205 ms 23588 KB Output is correct
9 Correct 214 ms 23876 KB Output is correct
10 Correct 130 ms 23940 KB Output is correct
11 Correct 50 ms 14072 KB Output is correct
12 Correct 167 ms 23804 KB Output is correct
13 Correct 173 ms 24000 KB Output is correct
14 Correct 167 ms 23432 KB Output is correct
15 Correct 190 ms 23428 KB Output is correct
16 Correct 166 ms 23460 KB Output is correct
17 Correct 165 ms 23472 KB Output is correct
18 Correct 182 ms 23292 KB Output is correct
19 Correct 167 ms 23176 KB Output is correct
20 Correct 202 ms 23556 KB Output is correct
21 Correct 197 ms 23404 KB Output is correct
22 Correct 164 ms 23440 KB Output is correct
23 Correct 47 ms 14052 KB Output is correct
24 Correct 216 ms 23060 KB Output is correct
25 Correct 7 ms 8540 KB Output is correct
26 Correct 1 ms 6748 KB Output is correct
27 Correct 1 ms 6748 KB Output is correct
28 Correct 15 ms 10620 KB Output is correct
29 Correct 6 ms 8284 KB Output is correct
30 Correct 2 ms 6744 KB Output is correct
31 Correct 3 ms 6744 KB Output is correct
32 Correct 2 ms 6748 KB Output is correct
33 Correct 2 ms 6748 KB Output is correct
34 Correct 6 ms 8448 KB Output is correct
35 Correct 1 ms 6492 KB Output is correct
36 Correct 1 ms 6492 KB Output is correct
37 Correct 1 ms 6660 KB Output is correct
38 Correct 1 ms 6748 KB Output is correct
39 Correct 2 ms 6744 KB Output is correct
40 Correct 152 ms 25824 KB Output is correct
41 Correct 154 ms 23940 KB Output is correct
42 Correct 159 ms 23972 KB Output is correct
43 Correct 52 ms 13940 KB Output is correct
44 Correct 45 ms 14160 KB Output is correct
45 Correct 150 ms 23192 KB Output is correct
46 Correct 151 ms 22852 KB Output is correct
47 Correct 176 ms 25880 KB Output is correct
48 Correct 50 ms 13396 KB Output is correct
49 Correct 151 ms 25728 KB Output is correct
50 Correct 153 ms 23156 KB Output is correct
51 Correct 145 ms 23080 KB Output is correct