답안 #1097665

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1097665	2024-10-07T23:50:10 Z	hickwhither	Construction Project 2 (JOI24_ho_t2)	C++17	100 / 100	175 ms	29420 KB

Main

#include <iostream>
#include <queue>
#include <vector>
#include <algorithm>
 
using namespace std;
 
#define int int64_t
 
const int MAXN = 2e5+3;
const int64_t INF = 1e18+69;
int n, m;
 
vector<pair<int,int>> e[MAXN];
 
int Start, End, lol, mintime;
 
int64_t ans;
int64_t f[2][MAXN];
 
void dijkstra(int s, int64_t f[]){
    fill(f+1,f+1+n,INF);
 
    priority_queue<pair<int64_t,int>, vector<pair<int64_t,int>>, greater<pair<int64_t,int>>> pq;
    pq.emplace(0, s);
    f[s] = 0;
    while(!pq.empty()){
        pair<int64_t,int> z = pq.top(); pq.pop();
        int64_t du = z.first;
        int u=z.second;
        if(du>f[u])continue;
        for(pair<int,int> &z : e[u]){
            int v=z.first, w=z.second;
            if(f[u]+w<f[v]){
                f[v] = f[u]+w;
                pq.emplace(f[v], v);
            }
        }
    }
 
}
 
signed main()
{
    cin.tie(0) -> sync_with_stdio(0);
    if(fopen("*.inp", "r")){
        freopen("*.inp", "r",stdin);
        freopen("*.out", "w",stdout);
    }
    
    cin >> n >> m;
    cin >> Start >> End >> lol >> mintime;
    for(int u, v, w, i=0; i<m; ++i){
        cin >> u >> v >> w;
        e[u].emplace_back(v, w);
        e[v].emplace_back(u, w);
    }
    dijkstra(Start, f[0]);
    dijkstra(End, f[1]);
 
 	if(f[0][End]<=mintime) {cout << n*(n-1)/2; return 0;}
  
    sort(f[0]+1, f[0]+1+n);
    sort(f[1]+1, f[1]+1+n);
 
    for(int i=1; i<=n; ++i){
        if(mintime<lol+f[1][i])break;
        auto x = upper_bound(f[0]+1, f[0]+1+n, mintime-lol-f[1][i]) - f[0];
        ans += x-1;
    }
    cout << ans;
 
 
 
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:47:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |         freopen("*.inp", "r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~
Main.cpp:48:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |         freopen("*.out", "w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 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	5244 KB	Output is correct
7	Correct	55 ms	21236 KB	Output is correct
8	Correct	63 ms	21456 KB	Output is correct
9	Correct	58 ms	22104 KB	Output is correct
10	Correct	2 ms	4952 KB	Output is correct
11	Correct	2 ms	5160 KB	Output is correct
12	Correct	2 ms	5212 KB	Output is correct
13	Correct	3 ms	5212 KB	Output is correct
14	Correct	34 ms	14988 KB	Output is correct
15	Correct	124 ms	22512 KB	Output is correct
16	Correct	2 ms	5208 KB	Output is correct
17	Correct	3 ms	5212 KB	Output is correct
18	Correct	69 ms	20536 KB	Output is correct
19	Correct	2 ms	4952 KB	Output is correct
20	Correct	2 ms	4952 KB	Output is correct
21	Correct	2 ms	5212 KB	Output is correct
22	Correct	3 ms	5212 KB	Output is correct
23	Correct	34 ms	14936 KB	Output is correct
24	Correct	116 ms	22512 KB	Output is correct
25	Correct	2 ms	4956 KB	Output is correct
26	Correct	3 ms	5468 KB	Output is correct
27	Correct	69 ms	27708 KB	Output is correct
28	Correct	52 ms	20596 KB	Output is correct
29	Correct	53 ms	18140 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4952 KB	Output is correct
2	Correct	2 ms	4952 KB	Output is correct
3	Correct	2 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	4956 KB	Output is correct
7	Correct	2 ms	4956 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 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	4956 KB	Output is correct
13	Correct	2 ms	5208 KB	Output is correct
14	Correct	2 ms	4952 KB	Output is correct
15	Correct	3 ms	4956 KB	Output is correct
16	Correct	2 ms	4956 KB	Output is correct
17	Correct	3 ms	4956 KB	Output is correct
18	Correct	2 ms	4952 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	4936 KB	Output is correct
24	Correct	2 ms	4956 KB	Output is correct
25	Correct	2 ms	4956 KB	Output is correct
26	Correct	3 ms	5164 KB	Output is correct
27	Correct	2 ms	5108 KB	Output is correct
28	Correct	2 ms	4956 KB	Output is correct
29	Correct	2 ms	5156 KB	Output is correct
30	Correct	2 ms	5212 KB	Output is correct
31	Correct	2 ms	4956 KB	Output is correct
32	Correct	2 ms	4956 KB	Output is correct

Subtask #3
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4952 KB	Output is correct
2	Correct	2 ms	4952 KB	Output is correct
3	Correct	2 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	4956 KB	Output is correct
7	Correct	2 ms	4956 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 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	4956 KB	Output is correct
13	Correct	2 ms	5208 KB	Output is correct
14	Correct	2 ms	4952 KB	Output is correct
15	Correct	3 ms	4956 KB	Output is correct
16	Correct	2 ms	4956 KB	Output is correct
17	Correct	3 ms	4956 KB	Output is correct
18	Correct	2 ms	4952 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	4936 KB	Output is correct
24	Correct	2 ms	4956 KB	Output is correct
25	Correct	2 ms	4956 KB	Output is correct
26	Correct	3 ms	5164 KB	Output is correct
27	Correct	2 ms	5108 KB	Output is correct
28	Correct	2 ms	4956 KB	Output is correct
29	Correct	2 ms	5156 KB	Output is correct
30	Correct	2 ms	5212 KB	Output is correct
31	Correct	2 ms	4956 KB	Output is correct
32	Correct	2 ms	4956 KB	Output is correct
33	Correct	4 ms	5468 KB	Output is correct
34	Correct	3 ms	5468 KB	Output is correct
35	Correct	2 ms	5212 KB	Output is correct
36	Correct	4 ms	5212 KB	Output is correct
37	Correct	3 ms	5168 KB	Output is correct
38	Correct	3 ms	5212 KB	Output is correct
39	Correct	3 ms	5212 KB	Output is correct
40	Correct	3 ms	5464 KB	Output is correct
41	Correct	3 ms	5424 KB	Output is correct
42	Correct	3 ms	5212 KB	Output is correct
43	Correct	4 ms	5460 KB	Output is correct
44	Correct	3 ms	5284 KB	Output is correct
45	Correct	4 ms	5212 KB	Output is correct
46	Correct	3 ms	5468 KB	Output is correct
47	Correct	3 ms	5168 KB	Output is correct
48	Correct	3 ms	5172 KB	Output is correct
49	Correct	3 ms	5212 KB	Output is correct
50	Correct	3 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	5468 KB	Output is correct
54	Correct	4 ms	5720 KB	Output is correct
55	Correct	3 ms	5208 KB	Output is correct
56	Correct	3 ms	5208 KB	Output is correct
57	Correct	3 ms	5212 KB	Output is correct
58	Correct	3 ms	5212 KB	Output is correct

Subtask #4
47.0 / 47.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 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	5244 KB	Output is correct
7	Correct	55 ms	21236 KB	Output is correct
8	Correct	63 ms	21456 KB	Output is correct
9	Correct	58 ms	22104 KB	Output is correct
10	Correct	2 ms	4952 KB	Output is correct
11	Correct	2 ms	5160 KB	Output is correct
12	Correct	2 ms	5212 KB	Output is correct
13	Correct	3 ms	5212 KB	Output is correct
14	Correct	34 ms	14988 KB	Output is correct
15	Correct	124 ms	22512 KB	Output is correct
16	Correct	2 ms	5208 KB	Output is correct
17	Correct	3 ms	5212 KB	Output is correct
18	Correct	69 ms	20536 KB	Output is correct
19	Correct	2 ms	4952 KB	Output is correct
20	Correct	2 ms	4952 KB	Output is correct
21	Correct	2 ms	5212 KB	Output is correct
22	Correct	3 ms	5212 KB	Output is correct
23	Correct	34 ms	14936 KB	Output is correct
24	Correct	116 ms	22512 KB	Output is correct
25	Correct	2 ms	4956 KB	Output is correct
26	Correct	3 ms	5468 KB	Output is correct
27	Correct	69 ms	27708 KB	Output is correct
28	Correct	52 ms	20596 KB	Output is correct
29	Correct	53 ms	18140 KB	Output is correct
30	Correct	2 ms	4952 KB	Output is correct
31	Correct	2 ms	4952 KB	Output is correct
32	Correct	2 ms	4956 KB	Output is correct
33	Correct	2 ms	4956 KB	Output is correct
34	Correct	2 ms	4956 KB	Output is correct
35	Correct	2 ms	4956 KB	Output is correct
36	Correct	2 ms	4956 KB	Output is correct
37	Correct	2 ms	4956 KB	Output is correct
38	Correct	2 ms	4956 KB	Output is correct
39	Correct	2 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	2 ms	5208 KB	Output is correct
43	Correct	2 ms	4952 KB	Output is correct
44	Correct	3 ms	4956 KB	Output is correct
45	Correct	2 ms	4956 KB	Output is correct
46	Correct	3 ms	4956 KB	Output is correct
47	Correct	2 ms	4952 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	4936 KB	Output is correct
53	Correct	2 ms	4956 KB	Output is correct
54	Correct	2 ms	4956 KB	Output is correct
55	Correct	3 ms	5164 KB	Output is correct
56	Correct	2 ms	5108 KB	Output is correct
57	Correct	2 ms	4956 KB	Output is correct
58	Correct	2 ms	5156 KB	Output is correct
59	Correct	2 ms	5212 KB	Output is correct
60	Correct	2 ms	4956 KB	Output is correct
61	Correct	2 ms	4956 KB	Output is correct
62	Correct	4 ms	5468 KB	Output is correct
63	Correct	3 ms	5468 KB	Output is correct
64	Correct	2 ms	5212 KB	Output is correct
65	Correct	4 ms	5212 KB	Output is correct
66	Correct	3 ms	5168 KB	Output is correct
67	Correct	3 ms	5212 KB	Output is correct
68	Correct	3 ms	5212 KB	Output is correct
69	Correct	3 ms	5464 KB	Output is correct
70	Correct	3 ms	5424 KB	Output is correct
71	Correct	3 ms	5212 KB	Output is correct
72	Correct	4 ms	5460 KB	Output is correct
73	Correct	3 ms	5284 KB	Output is correct
74	Correct	4 ms	5212 KB	Output is correct
75	Correct	3 ms	5468 KB	Output is correct
76	Correct	3 ms	5168 KB	Output is correct
77	Correct	3 ms	5172 KB	Output is correct
78	Correct	3 ms	5212 KB	Output is correct
79	Correct	3 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	5468 KB	Output is correct
83	Correct	4 ms	5720 KB	Output is correct
84	Correct	3 ms	5208 KB	Output is correct
85	Correct	3 ms	5208 KB	Output is correct
86	Correct	3 ms	5212 KB	Output is correct
87	Correct	3 ms	5212 KB	Output is correct
88	Correct	94 ms	23684 KB	Output is correct
89	Correct	91 ms	23560 KB	Output is correct
90	Correct	97 ms	23556 KB	Output is correct
91	Correct	39 ms	19028 KB	Output is correct
92	Correct	40 ms	19032 KB	Output is correct
93	Correct	37 ms	15696 KB	Output is correct
94	Correct	49 ms	15664 KB	Output is correct
95	Correct	153 ms	24720 KB	Output is correct
96	Correct	136 ms	24528 KB	Output is correct
97	Correct	134 ms	22972 KB	Output is correct
98	Correct	124 ms	23068 KB	Output is correct
99	Correct	60 ms	22096 KB	Output is correct
100	Correct	60 ms	21864 KB	Output is correct
101	Correct	38 ms	19024 KB	Output is correct
102	Correct	44 ms	19172 KB	Output is correct
103	Correct	37 ms	15700 KB	Output is correct
104	Correct	37 ms	15768 KB	Output is correct
105	Correct	175 ms	24496 KB	Output is correct
106	Correct	153 ms	24512 KB	Output is correct
107	Correct	139 ms	29096 KB	Output is correct
108	Correct	140 ms	29420 KB	Output is correct
109	Correct	74 ms	21648 KB	Output is correct
110	Correct	66 ms	21652 KB	Output is correct
111	Correct	82 ms	19424 KB	Output is correct
112	Correct	86 ms	19420 KB	Output is correct

답안 #1097665

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 16.0 / 16.0

Subtask #3 29.0 / 29.0

Subtask #4 47.0 / 47.0

Subtask #1
8.0 / 8.0

Subtask #2
16.0 / 16.0

Subtask #3
29.0 / 29.0

Subtask #4
47.0 / 47.0