#include <bitset>
#include <cmath>
#include <functional>
#include <algorithm>
#include <numeric>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <unordered_map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>
#include <cstring>
#include <climits>
#define pb push_back
#define MOD 1000000007
#define NMAX 200001
#define nl '\n'
#define INF 1e18
#define pii1 pair<int, pair<int,int>> (1,(1,2));
#define pii pair<int,int>
#define tpl tuple<int,int,int,int,int>
#define int long long
using namespace std;
ifstream fin("data.in");
ofstream fout("data.out");
/*
====================DEMONSTRATION======================
=========================END===========================
*/
int n,m,s,t,l,k;
vector<int>v;
vector<vector<pii>>G(NMAX);
vector<int>dist_s,dist_t;
void dijkstra(int node,vector<int>&dist)
{
priority_queue<pii,vector<pii>,greater<pii>>pq;
for(int i=1;i<=n;++i)
dist[i]=INF;
dist[node]=0;
pq.push({0,node});
while(!pq.empty())
{
auto [dis,first]=pq.top();
pq.pop();
for(auto [u,w]:G[first])
{
if(dist[u]>dist[first]+w)
{
dist[u]=dist[first]+w;
pq.push({dist[u],u});
}
}
}
}
signed main() {
cin>>n>>m;
cin>>s>>t>>l>>k;
dist_s.resize(n+1);
dist_t.resize(n+1);
for(int i=1;i<=m;++i)
{
int x,y,c;
cin>>x>>y>>c;
G[x].pb({y,c});
G[y].pb({x,c});
}
dijkstra(s,dist_s);
dijkstra(t,dist_t);
if(dist_s[t]<=k)
{
cout<<(n*(n-1)/2);
return 0;
}
sort(dist_t.begin()+1,dist_t.end());
int ans=0;
for(int i=1;i<=n;++i)
{
int dis=k-l-dist_s[i];
int st=1;
int dr=n;
int pos=0;
while(st<=dr)
{
int mid=(st+dr)/2;
if(dist_t[mid]<=dis)
{
pos=mid;
st=mid+1;
}
else
dr=mid-1;
}
ans+=pos;
}
cout<<ans;
return 0;
}
Compilation message
Main.cpp: In function 'void dijkstra(long long int, std::vector<long long int>&)':
Main.cpp:55:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
55 | auto [dis,first]=pq.top();
| ^
Main.cpp:57:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
57 | for(auto [u,w]:G[first])
| ^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4952 KB |
Output is correct |
2 |
Correct |
2 ms |
4956 KB |
Output is correct |
3 |
Correct |
2 ms |
4956 KB |
Output is correct |
4 |
Correct |
2 ms |
4956 KB |
Output is correct |
5 |
Correct |
3 ms |
5212 KB |
Output is correct |
6 |
Correct |
3 ms |
5212 KB |
Output is correct |
7 |
Correct |
96 ms |
19088 KB |
Output is correct |
8 |
Correct |
113 ms |
18892 KB |
Output is correct |
9 |
Correct |
105 ms |
19544 KB |
Output is correct |
10 |
Correct |
2 ms |
4956 KB |
Output is correct |
11 |
Correct |
2 ms |
4956 KB |
Output is correct |
12 |
Correct |
2 ms |
5212 KB |
Output is correct |
13 |
Correct |
4 ms |
5212 KB |
Output is correct |
14 |
Correct |
67 ms |
13344 KB |
Output is correct |
15 |
Correct |
176 ms |
19584 KB |
Output is correct |
16 |
Correct |
1 ms |
4956 KB |
Output is correct |
17 |
Correct |
3 ms |
5212 KB |
Output is correct |
18 |
Correct |
113 ms |
17456 KB |
Output is correct |
19 |
Correct |
2 ms |
4952 KB |
Output is correct |
20 |
Correct |
1 ms |
4956 KB |
Output is correct |
21 |
Correct |
4 ms |
5212 KB |
Output is correct |
22 |
Correct |
4 ms |
5248 KB |
Output is correct |
23 |
Correct |
74 ms |
13368 KB |
Output is correct |
24 |
Correct |
176 ms |
19688 KB |
Output is correct |
25 |
Correct |
1 ms |
4952 KB |
Output is correct |
26 |
Correct |
3 ms |
5212 KB |
Output is correct |
27 |
Correct |
128 ms |
24836 KB |
Output is correct |
28 |
Correct |
106 ms |
18072 KB |
Output is correct |
29 |
Correct |
129 ms |
15444 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4956 KB |
Output is correct |
2 |
Correct |
1 ms |
4956 KB |
Output is correct |
3 |
Correct |
2 ms |
4952 KB |
Output is correct |
4 |
Correct |
1 ms |
4956 KB |
Output is correct |
5 |
Correct |
1 ms |
4956 KB |
Output is correct |
6 |
Correct |
1 ms |
4956 KB |
Output is correct |
7 |
Correct |
1 ms |
5036 KB |
Output is correct |
8 |
Correct |
1 ms |
4956 KB |
Output is correct |
9 |
Correct |
2 ms |
4956 KB |
Output is correct |
10 |
Correct |
1 ms |
4956 KB |
Output is correct |
11 |
Correct |
2 ms |
4956 KB |
Output is correct |
12 |
Correct |
2 ms |
4956 KB |
Output is correct |
13 |
Correct |
1 ms |
4956 KB |
Output is correct |
14 |
Correct |
2 ms |
4956 KB |
Output is correct |
15 |
Correct |
1 ms |
4956 KB |
Output is correct |
16 |
Correct |
2 ms |
4956 KB |
Output is correct |
17 |
Correct |
2 ms |
4956 KB |
Output is correct |
18 |
Correct |
1 ms |
4956 KB |
Output is correct |
19 |
Correct |
2 ms |
4956 KB |
Output is correct |
20 |
Correct |
2 ms |
4956 KB |
Output is correct |
21 |
Correct |
2 ms |
4956 KB |
Output is correct |
22 |
Correct |
2 ms |
4956 KB |
Output is correct |
23 |
Correct |
2 ms |
4956 KB |
Output is correct |
24 |
Correct |
1 ms |
4956 KB |
Output is correct |
25 |
Correct |
2 ms |
4956 KB |
Output is correct |
26 |
Correct |
1 ms |
4956 KB |
Output is correct |
27 |
Correct |
2 ms |
4956 KB |
Output is correct |
28 |
Correct |
1 ms |
4956 KB |
Output is correct |
29 |
Correct |
1 ms |
4956 KB |
Output is correct |
30 |
Correct |
1 ms |
4956 KB |
Output is correct |
31 |
Correct |
1 ms |
4956 KB |
Output is correct |
32 |
Correct |
1 ms |
4956 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4956 KB |
Output is correct |
2 |
Correct |
1 ms |
4956 KB |
Output is correct |
3 |
Correct |
2 ms |
4952 KB |
Output is correct |
4 |
Correct |
1 ms |
4956 KB |
Output is correct |
5 |
Correct |
1 ms |
4956 KB |
Output is correct |
6 |
Correct |
1 ms |
4956 KB |
Output is correct |
7 |
Correct |
1 ms |
5036 KB |
Output is correct |
8 |
Correct |
1 ms |
4956 KB |
Output is correct |
9 |
Correct |
2 ms |
4956 KB |
Output is correct |
10 |
Correct |
1 ms |
4956 KB |
Output is correct |
11 |
Correct |
2 ms |
4956 KB |
Output is correct |
12 |
Correct |
2 ms |
4956 KB |
Output is correct |
13 |
Correct |
1 ms |
4956 KB |
Output is correct |
14 |
Correct |
2 ms |
4956 KB |
Output is correct |
15 |
Correct |
1 ms |
4956 KB |
Output is correct |
16 |
Correct |
2 ms |
4956 KB |
Output is correct |
17 |
Correct |
2 ms |
4956 KB |
Output is correct |
18 |
Correct |
1 ms |
4956 KB |
Output is correct |
19 |
Correct |
2 ms |
4956 KB |
Output is correct |
20 |
Correct |
2 ms |
4956 KB |
Output is correct |
21 |
Correct |
2 ms |
4956 KB |
Output is correct |
22 |
Correct |
2 ms |
4956 KB |
Output is correct |
23 |
Correct |
2 ms |
4956 KB |
Output is correct |
24 |
Correct |
1 ms |
4956 KB |
Output is correct |
25 |
Correct |
2 ms |
4956 KB |
Output is correct |
26 |
Correct |
1 ms |
4956 KB |
Output is correct |
27 |
Correct |
2 ms |
4956 KB |
Output is correct |
28 |
Correct |
1 ms |
4956 KB |
Output is correct |
29 |
Correct |
1 ms |
4956 KB |
Output is correct |
30 |
Correct |
1 ms |
4956 KB |
Output is correct |
31 |
Correct |
1 ms |
4956 KB |
Output is correct |
32 |
Correct |
1 ms |
4956 KB |
Output is correct |
33 |
Correct |
2 ms |
5212 KB |
Output is correct |
34 |
Correct |
2 ms |
5212 KB |
Output is correct |
35 |
Correct |
3 ms |
5212 KB |
Output is correct |
36 |
Correct |
3 ms |
5212 KB |
Output is correct |
37 |
Correct |
3 ms |
5212 KB |
Output is correct |
38 |
Correct |
2 ms |
5212 KB |
Output is correct |
39 |
Correct |
3 ms |
5316 KB |
Output is correct |
40 |
Correct |
3 ms |
5212 KB |
Output is correct |
41 |
Correct |
2 ms |
5212 KB |
Output is correct |
42 |
Correct |
2 ms |
5212 KB |
Output is correct |
43 |
Correct |
4 ms |
5212 KB |
Output is correct |
44 |
Correct |
5 ms |
5464 KB |
Output is correct |
45 |
Correct |
5 ms |
5212 KB |
Output is correct |
46 |
Correct |
5 ms |
5212 KB |
Output is correct |
47 |
Correct |
3 ms |
5212 KB |
Output is correct |
48 |
Correct |
3 ms |
5212 KB |
Output is correct |
49 |
Correct |
3 ms |
5212 KB |
Output is correct |
50 |
Correct |
2 ms |
5212 KB |
Output is correct |
51 |
Correct |
4 ms |
5264 KB |
Output is correct |
52 |
Correct |
3 ms |
5212 KB |
Output is correct |
53 |
Correct |
4 ms |
5208 KB |
Output is correct |
54 |
Correct |
4 ms |
5212 KB |
Output is correct |
55 |
Correct |
5 ms |
5212 KB |
Output is correct |
56 |
Correct |
4 ms |
5212 KB |
Output is correct |
57 |
Correct |
3 ms |
5212 KB |
Output is correct |
58 |
Correct |
4 ms |
5212 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4952 KB |
Output is correct |
2 |
Correct |
2 ms |
4956 KB |
Output is correct |
3 |
Correct |
2 ms |
4956 KB |
Output is correct |
4 |
Correct |
2 ms |
4956 KB |
Output is correct |
5 |
Correct |
3 ms |
5212 KB |
Output is correct |
6 |
Correct |
3 ms |
5212 KB |
Output is correct |
7 |
Correct |
96 ms |
19088 KB |
Output is correct |
8 |
Correct |
113 ms |
18892 KB |
Output is correct |
9 |
Correct |
105 ms |
19544 KB |
Output is correct |
10 |
Correct |
2 ms |
4956 KB |
Output is correct |
11 |
Correct |
2 ms |
4956 KB |
Output is correct |
12 |
Correct |
2 ms |
5212 KB |
Output is correct |
13 |
Correct |
4 ms |
5212 KB |
Output is correct |
14 |
Correct |
67 ms |
13344 KB |
Output is correct |
15 |
Correct |
176 ms |
19584 KB |
Output is correct |
16 |
Correct |
1 ms |
4956 KB |
Output is correct |
17 |
Correct |
3 ms |
5212 KB |
Output is correct |
18 |
Correct |
113 ms |
17456 KB |
Output is correct |
19 |
Correct |
2 ms |
4952 KB |
Output is correct |
20 |
Correct |
1 ms |
4956 KB |
Output is correct |
21 |
Correct |
4 ms |
5212 KB |
Output is correct |
22 |
Correct |
4 ms |
5248 KB |
Output is correct |
23 |
Correct |
74 ms |
13368 KB |
Output is correct |
24 |
Correct |
176 ms |
19688 KB |
Output is correct |
25 |
Correct |
1 ms |
4952 KB |
Output is correct |
26 |
Correct |
3 ms |
5212 KB |
Output is correct |
27 |
Correct |
128 ms |
24836 KB |
Output is correct |
28 |
Correct |
106 ms |
18072 KB |
Output is correct |
29 |
Correct |
129 ms |
15444 KB |
Output is correct |
30 |
Correct |
2 ms |
4956 KB |
Output is correct |
31 |
Correct |
1 ms |
4956 KB |
Output is correct |
32 |
Correct |
2 ms |
4952 KB |
Output is correct |
33 |
Correct |
1 ms |
4956 KB |
Output is correct |
34 |
Correct |
1 ms |
4956 KB |
Output is correct |
35 |
Correct |
1 ms |
4956 KB |
Output is correct |
36 |
Correct |
1 ms |
5036 KB |
Output is correct |
37 |
Correct |
1 ms |
4956 KB |
Output is correct |
38 |
Correct |
2 ms |
4956 KB |
Output is correct |
39 |
Correct |
1 ms |
4956 KB |
Output is correct |
40 |
Correct |
2 ms |
4956 KB |
Output is correct |
41 |
Correct |
2 ms |
4956 KB |
Output is correct |
42 |
Correct |
1 ms |
4956 KB |
Output is correct |
43 |
Correct |
2 ms |
4956 KB |
Output is correct |
44 |
Correct |
1 ms |
4956 KB |
Output is correct |
45 |
Correct |
2 ms |
4956 KB |
Output is correct |
46 |
Correct |
2 ms |
4956 KB |
Output is correct |
47 |
Correct |
1 ms |
4956 KB |
Output is correct |
48 |
Correct |
2 ms |
4956 KB |
Output is correct |
49 |
Correct |
2 ms |
4956 KB |
Output is correct |
50 |
Correct |
2 ms |
4956 KB |
Output is correct |
51 |
Correct |
2 ms |
4956 KB |
Output is correct |
52 |
Correct |
2 ms |
4956 KB |
Output is correct |
53 |
Correct |
1 ms |
4956 KB |
Output is correct |
54 |
Correct |
2 ms |
4956 KB |
Output is correct |
55 |
Correct |
1 ms |
4956 KB |
Output is correct |
56 |
Correct |
2 ms |
4956 KB |
Output is correct |
57 |
Correct |
1 ms |
4956 KB |
Output is correct |
58 |
Correct |
1 ms |
4956 KB |
Output is correct |
59 |
Correct |
1 ms |
4956 KB |
Output is correct |
60 |
Correct |
1 ms |
4956 KB |
Output is correct |
61 |
Correct |
1 ms |
4956 KB |
Output is correct |
62 |
Correct |
2 ms |
5212 KB |
Output is correct |
63 |
Correct |
2 ms |
5212 KB |
Output is correct |
64 |
Correct |
3 ms |
5212 KB |
Output is correct |
65 |
Correct |
3 ms |
5212 KB |
Output is correct |
66 |
Correct |
3 ms |
5212 KB |
Output is correct |
67 |
Correct |
2 ms |
5212 KB |
Output is correct |
68 |
Correct |
3 ms |
5316 KB |
Output is correct |
69 |
Correct |
3 ms |
5212 KB |
Output is correct |
70 |
Correct |
2 ms |
5212 KB |
Output is correct |
71 |
Correct |
2 ms |
5212 KB |
Output is correct |
72 |
Correct |
4 ms |
5212 KB |
Output is correct |
73 |
Correct |
5 ms |
5464 KB |
Output is correct |
74 |
Correct |
5 ms |
5212 KB |
Output is correct |
75 |
Correct |
5 ms |
5212 KB |
Output is correct |
76 |
Correct |
3 ms |
5212 KB |
Output is correct |
77 |
Correct |
3 ms |
5212 KB |
Output is correct |
78 |
Correct |
3 ms |
5212 KB |
Output is correct |
79 |
Correct |
2 ms |
5212 KB |
Output is correct |
80 |
Correct |
4 ms |
5264 KB |
Output is correct |
81 |
Correct |
3 ms |
5212 KB |
Output is correct |
82 |
Correct |
4 ms |
5208 KB |
Output is correct |
83 |
Correct |
4 ms |
5212 KB |
Output is correct |
84 |
Correct |
5 ms |
5212 KB |
Output is correct |
85 |
Correct |
4 ms |
5212 KB |
Output is correct |
86 |
Correct |
3 ms |
5212 KB |
Output is correct |
87 |
Correct |
4 ms |
5212 KB |
Output is correct |
88 |
Correct |
172 ms |
19028 KB |
Output is correct |
89 |
Correct |
158 ms |
19020 KB |
Output is correct |
90 |
Correct |
162 ms |
18920 KB |
Output is correct |
91 |
Correct |
103 ms |
15440 KB |
Output is correct |
92 |
Correct |
106 ms |
15700 KB |
Output is correct |
93 |
Correct |
74 ms |
13396 KB |
Output is correct |
94 |
Correct |
74 ms |
13396 KB |
Output is correct |
95 |
Correct |
233 ms |
20084 KB |
Output is correct |
96 |
Correct |
221 ms |
20160 KB |
Output is correct |
97 |
Correct |
206 ms |
18504 KB |
Output is correct |
98 |
Correct |
207 ms |
18512 KB |
Output is correct |
99 |
Correct |
139 ms |
17488 KB |
Output is correct |
100 |
Correct |
142 ms |
17484 KB |
Output is correct |
101 |
Correct |
101 ms |
15444 KB |
Output is correct |
102 |
Correct |
117 ms |
15696 KB |
Output is correct |
103 |
Correct |
77 ms |
13392 KB |
Output is correct |
104 |
Correct |
81 ms |
13392 KB |
Output is correct |
105 |
Correct |
224 ms |
20128 KB |
Output is correct |
106 |
Correct |
226 ms |
20100 KB |
Output is correct |
107 |
Correct |
228 ms |
24828 KB |
Output is correct |
108 |
Correct |
217 ms |
24828 KB |
Output is correct |
109 |
Execution timed out |
2102 ms |
17456 KB |
Time limit exceeded |
110 |
Halted |
0 ms |
0 KB |
- |