답안 #371471

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
371471	2021-02-26T16:55:03 Z	Leonardo_Paes	철인 이종 경기 (APIO18_duathlon)	C++17	49 / 100	91 ms	23528 KB

count_triplets

#include <bits/stdc++.h>
using namespace std;
//#define int long long
#define ar array
#define sz(a) ((int)(a).size())
#define all(a) (a).begin(),(a).end()
typedef long long ll;
typedef pair<int,int> pii;
#define f first
#define s second
const int maxn = 1e5+10;
#define MAXN 100000 + 10
vector<int> grafo[maxn], bcc[2*maxn];
int n, m, in[maxn], low[maxn], sub[maxn], t, sz, bccs = 1; // tempo de entrada e menor tempo de entrada de back-edge
stack<int> s;

void dfs(int u, int p = 0){
    in[u] = low[u] = ++t;
    s.push(u);
    ++sz;
    for(int v : grafo[u]){
        if(v == p) continue;
        if(!in[v]){
            dfs(v, u);
            low[u] = min(low[u], low[v]);
            if(low[v] >= in[u]){
                int id = n + bccs;
                bcc[u].push_back(id);
                while(bcc[id].empty() or bcc[id].back() != v){
                    bcc[id].push_back(s.top());
                    s.pop();
                }
                bccs++;
            }
        }
        else low[u] = min(low[u], in[v]);
    }
}

ll solve(int u){
    ll ans = 0, tam;
    sub[u] = (u <= n);
    tam = (int)bcc[u].size();
    for(int v : bcc[u]){
        ans += solve(v);
        sub[u] += sub[v];
        if(u > n) ans += tam * sub[v] * (sub[v] - 1);
    }
    if(u > n) ans += tam * (sz - sub[u]) * (sz - sub[u] - 1);
    return ans;
}

int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    cin >> n >> m;
    for(int i=1; i<=m; i++){
        int u, v;
        cin >> u >> v;
        grafo[u].push_back(v);
        grafo[v].push_back(u);
    }
    ll ans = 0;
    for(int i=1; i<=n; i++){
        if(!in[i]){
            sz = 0;
            dfs(i);
            ans += sz * (sz-1) * (sz-2); // total
            ans -= solve(i); // triplas ruins
        }
    }
    cout << ans << "\n";
    return 0;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	7412 KB	Output is correct
2	Correct	6 ms	7532 KB	Output is correct
3	Correct	6 ms	7404 KB	Output is correct
4	Correct	5 ms	7404 KB	Output is correct
5	Correct	4 ms	7404 KB	Output is correct
6	Correct	5 ms	7404 KB	Output is correct
7	Correct	5 ms	7404 KB	Output is correct
8	Correct	5 ms	7404 KB	Output is correct
9	Correct	5 ms	7404 KB	Output is correct
10	Correct	5 ms	7404 KB	Output is correct
11	Correct	5 ms	7404 KB	Output is correct
12	Correct	5 ms	7404 KB	Output is correct
13	Correct	6 ms	7404 KB	Output is correct
14	Correct	5 ms	7404 KB	Output is correct
15	Correct	5 ms	7404 KB	Output is correct
16	Correct	5 ms	7404 KB	Output is correct
17	Correct	5 ms	7404 KB	Output is correct
18	Correct	5 ms	7404 KB	Output is correct
19	Correct	5 ms	7404 KB	Output is correct
20	Correct	5 ms	7404 KB	Output is correct
21	Correct	5 ms	7404 KB	Output is correct
22	Correct	5 ms	7404 KB	Output is correct
23	Correct	5 ms	7404 KB	Output is correct
24	Correct	5 ms	7404 KB	Output is correct
25	Correct	5 ms	7404 KB	Output is correct
26	Correct	5 ms	7404 KB	Output is correct
27	Correct	5 ms	7404 KB	Output is correct
28	Correct	5 ms	7404 KB	Output is correct
29	Correct	5 ms	7404 KB	Output is correct
30	Correct	5 ms	7404 KB	Output is correct
31	Correct	5 ms	7404 KB	Output is correct
32	Correct	5 ms	7404 KB	Output is correct
33	Correct	5 ms	7404 KB	Output is correct
34	Correct	5 ms	7404 KB	Output is correct
35	Correct	5 ms	7404 KB	Output is correct

Subtask #2
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	7412 KB	Output is correct
2	Correct	6 ms	7532 KB	Output is correct
3	Correct	6 ms	7404 KB	Output is correct
4	Correct	5 ms	7404 KB	Output is correct
5	Correct	4 ms	7404 KB	Output is correct
6	Correct	5 ms	7404 KB	Output is correct
7	Correct	5 ms	7404 KB	Output is correct
8	Correct	5 ms	7404 KB	Output is correct
9	Correct	5 ms	7404 KB	Output is correct
10	Correct	5 ms	7404 KB	Output is correct
11	Correct	5 ms	7404 KB	Output is correct
12	Correct	5 ms	7404 KB	Output is correct
13	Correct	6 ms	7404 KB	Output is correct
14	Correct	5 ms	7404 KB	Output is correct
15	Correct	5 ms	7404 KB	Output is correct
16	Correct	5 ms	7404 KB	Output is correct
17	Correct	5 ms	7404 KB	Output is correct
18	Correct	5 ms	7404 KB	Output is correct
19	Correct	5 ms	7404 KB	Output is correct
20	Correct	5 ms	7404 KB	Output is correct
21	Correct	5 ms	7404 KB	Output is correct
22	Correct	5 ms	7404 KB	Output is correct
23	Correct	5 ms	7404 KB	Output is correct
24	Correct	5 ms	7404 KB	Output is correct
25	Correct	5 ms	7404 KB	Output is correct
26	Correct	5 ms	7404 KB	Output is correct
27	Correct	5 ms	7404 KB	Output is correct
28	Correct	5 ms	7404 KB	Output is correct
29	Correct	5 ms	7404 KB	Output is correct
30	Correct	5 ms	7404 KB	Output is correct
31	Correct	5 ms	7404 KB	Output is correct
32	Correct	5 ms	7404 KB	Output is correct
33	Correct	5 ms	7404 KB	Output is correct
34	Correct	5 ms	7404 KB	Output is correct
35	Correct	5 ms	7404 KB	Output is correct
36	Correct	5 ms	7404 KB	Output is correct
37	Correct	5 ms	7404 KB	Output is correct
38	Correct	5 ms	7404 KB	Output is correct
39	Correct	5 ms	7404 KB	Output is correct
40	Correct	5 ms	7404 KB	Output is correct
41	Correct	5 ms	7404 KB	Output is correct
42	Correct	5 ms	7404 KB	Output is correct
43	Correct	5 ms	7404 KB	Output is correct
44	Correct	6 ms	7552 KB	Output is correct
45	Correct	6 ms	7392 KB	Output is correct
46	Correct	6 ms	7424 KB	Output is correct
47	Correct	5 ms	7404 KB	Output is correct
48	Correct	5 ms	7404 KB	Output is correct
49	Correct	5 ms	7404 KB	Output is correct
50	Correct	5 ms	7404 KB	Output is correct
51	Correct	5 ms	7404 KB	Output is correct
52	Correct	5 ms	7404 KB	Output is correct
53	Correct	5 ms	7404 KB	Output is correct
54	Correct	5 ms	7404 KB	Output is correct
55	Correct	5 ms	7404 KB	Output is correct
56	Correct	5 ms	7404 KB	Output is correct
57	Correct	5 ms	7404 KB	Output is correct
58	Correct	5 ms	7404 KB	Output is correct
59	Correct	5 ms	7404 KB	Output is correct
60	Correct	5 ms	7404 KB	Output is correct
61	Correct	5 ms	7404 KB	Output is correct
62	Correct	5 ms	7404 KB	Output is correct
63	Correct	5 ms	7404 KB	Output is correct
64	Correct	5 ms	7404 KB	Output is correct
65	Correct	5 ms	7404 KB	Output is correct

Subtask #3
0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	72 ms	23528 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	7532 KB	Output is correct
2	Correct	5 ms	7532 KB	Output is correct
3	Correct	5 ms	7532 KB	Output is correct
4	Correct	6 ms	7660 KB	Output is correct
5	Correct	6 ms	7532 KB	Output is correct
6	Correct	7 ms	7532 KB	Output is correct
7	Correct	6 ms	7532 KB	Output is correct
8	Correct	6 ms	7532 KB	Output is correct
9	Correct	5 ms	7532 KB	Output is correct
10	Correct	5 ms	7532 KB	Output is correct
11	Correct	6 ms	7532 KB	Output is correct
12	Correct	5 ms	7532 KB	Output is correct
13	Correct	5 ms	7532 KB	Output is correct
14	Correct	6 ms	7532 KB	Output is correct
15	Correct	6 ms	7532 KB	Output is correct
16	Correct	5 ms	7532 KB	Output is correct
17	Correct	5 ms	7532 KB	Output is correct
18	Correct	6 ms	7680 KB	Output is correct
19	Correct	7 ms	7532 KB	Output is correct
20	Correct	7 ms	7532 KB	Output is correct

Subtask #5
0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	84 ms	16492 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #6
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	7532 KB	Output is correct
2	Correct	7 ms	7660 KB	Output is correct
3	Correct	5 ms	7532 KB	Output is correct
4	Correct	5 ms	7532 KB	Output is correct
5	Correct	5 ms	7404 KB	Output is correct
6	Correct	5 ms	7404 KB	Output is correct
7	Correct	5 ms	7404 KB	Output is correct
8	Correct	5 ms	7404 KB	Output is correct
9	Correct	6 ms	7404 KB	Output is correct
10	Correct	5 ms	7404 KB	Output is correct
11	Correct	5 ms	7532 KB	Output is correct
12	Correct	5 ms	7532 KB	Output is correct
13	Correct	5 ms	7532 KB	Output is correct
14	Correct	5 ms	7532 KB	Output is correct
15	Correct	5 ms	7532 KB	Output is correct
16	Correct	5 ms	7532 KB	Output is correct
17	Correct	6 ms	7532 KB	Output is correct
18	Correct	6 ms	7532 KB	Output is correct
19	Correct	6 ms	7404 KB	Output is correct
20	Correct	6 ms	7404 KB	Output is correct
21	Correct	5 ms	7532 KB	Output is correct
22	Correct	5 ms	7532 KB	Output is correct
23	Correct	6 ms	7532 KB	Output is correct
24	Correct	6 ms	7552 KB	Output is correct
25	Correct	5 ms	7404 KB	Output is correct
26	Correct	5 ms	7404 KB	Output is correct
27	Correct	5 ms	7404 KB	Output is correct

Subtask #7
0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	91 ms	16492 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #8
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	7412 KB	Output is correct
2	Correct	6 ms	7532 KB	Output is correct
3	Correct	6 ms	7404 KB	Output is correct
4	Correct	5 ms	7404 KB	Output is correct
5	Correct	4 ms	7404 KB	Output is correct
6	Correct	5 ms	7404 KB	Output is correct
7	Correct	5 ms	7404 KB	Output is correct
8	Correct	5 ms	7404 KB	Output is correct
9	Correct	5 ms	7404 KB	Output is correct
10	Correct	5 ms	7404 KB	Output is correct
11	Correct	5 ms	7404 KB	Output is correct
12	Correct	5 ms	7404 KB	Output is correct
13	Correct	6 ms	7404 KB	Output is correct
14	Correct	5 ms	7404 KB	Output is correct
15	Correct	5 ms	7404 KB	Output is correct
16	Correct	5 ms	7404 KB	Output is correct
17	Correct	5 ms	7404 KB	Output is correct
18	Correct	5 ms	7404 KB	Output is correct
19	Correct	5 ms	7404 KB	Output is correct
20	Correct	5 ms	7404 KB	Output is correct
21	Correct	5 ms	7404 KB	Output is correct
22	Correct	5 ms	7404 KB	Output is correct
23	Correct	5 ms	7404 KB	Output is correct
24	Correct	5 ms	7404 KB	Output is correct
25	Correct	5 ms	7404 KB	Output is correct
26	Correct	5 ms	7404 KB	Output is correct
27	Correct	5 ms	7404 KB	Output is correct
28	Correct	5 ms	7404 KB	Output is correct
29	Correct	5 ms	7404 KB	Output is correct
30	Correct	5 ms	7404 KB	Output is correct
31	Correct	5 ms	7404 KB	Output is correct
32	Correct	5 ms	7404 KB	Output is correct
33	Correct	5 ms	7404 KB	Output is correct
34	Correct	5 ms	7404 KB	Output is correct
35	Correct	5 ms	7404 KB	Output is correct
36	Correct	5 ms	7404 KB	Output is correct
37	Correct	5 ms	7404 KB	Output is correct
38	Correct	5 ms	7404 KB	Output is correct
39	Correct	5 ms	7404 KB	Output is correct
40	Correct	5 ms	7404 KB	Output is correct
41	Correct	5 ms	7404 KB	Output is correct
42	Correct	5 ms	7404 KB	Output is correct
43	Correct	5 ms	7404 KB	Output is correct
44	Correct	6 ms	7552 KB	Output is correct
45	Correct	6 ms	7392 KB	Output is correct
46	Correct	6 ms	7424 KB	Output is correct
47	Correct	5 ms	7404 KB	Output is correct
48	Correct	5 ms	7404 KB	Output is correct
49	Correct	5 ms	7404 KB	Output is correct
50	Correct	5 ms	7404 KB	Output is correct
51	Correct	5 ms	7404 KB	Output is correct
52	Correct	5 ms	7404 KB	Output is correct
53	Correct	5 ms	7404 KB	Output is correct
54	Correct	5 ms	7404 KB	Output is correct
55	Correct	5 ms	7404 KB	Output is correct
56	Correct	5 ms	7404 KB	Output is correct
57	Correct	5 ms	7404 KB	Output is correct
58	Correct	5 ms	7404 KB	Output is correct
59	Correct	5 ms	7404 KB	Output is correct
60	Correct	5 ms	7404 KB	Output is correct
61	Correct	5 ms	7404 KB	Output is correct
62	Correct	5 ms	7404 KB	Output is correct
63	Correct	5 ms	7404 KB	Output is correct
64	Correct	5 ms	7404 KB	Output is correct
65	Correct	5 ms	7404 KB	Output is correct
66	Correct	5 ms	7404 KB	Output is correct
67	Correct	5 ms	7404 KB	Output is correct
68	Correct	6 ms	7548 KB	Output is correct
69	Correct	6 ms	7532 KB	Output is correct
70	Correct	6 ms	7532 KB	Output is correct
71	Correct	5 ms	7404 KB	Output is correct
72	Correct	5 ms	7404 KB	Output is correct
73	Correct	5 ms	7404 KB	Output is correct
74	Correct	5 ms	7404 KB	Output is correct
75	Correct	6 ms	7404 KB	Output is correct
76	Correct	5 ms	7404 KB	Output is correct
77	Correct	5 ms	7532 KB	Output is correct
78	Correct	5 ms	7404 KB	Output is correct
79	Correct	5 ms	7404 KB	Output is correct
80	Correct	5 ms	7404 KB	Output is correct
81	Correct	5 ms	7404 KB	Output is correct
82	Correct	5 ms	7532 KB	Output is correct
83	Correct	5 ms	7532 KB	Output is correct
84	Correct	5 ms	7532 KB	Output is correct
85	Correct	5 ms	7532 KB	Output is correct
86	Correct	5 ms	7404 KB	Output is correct
87	Correct	5 ms	7404 KB	Output is correct
88	Correct	6 ms	7404 KB	Output is correct
89	Correct	6 ms	7404 KB	Output is correct
90	Correct	5 ms	7404 KB	Output is correct
91	Correct	5 ms	7404 KB	Output is correct
92	Correct	5 ms	7404 KB	Output is correct

Subtask #9
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	7412 KB	Output is correct
2	Correct	6 ms	7532 KB	Output is correct
3	Correct	6 ms	7404 KB	Output is correct
4	Correct	5 ms	7404 KB	Output is correct
5	Correct	4 ms	7404 KB	Output is correct
6	Correct	5 ms	7404 KB	Output is correct
7	Correct	5 ms	7404 KB	Output is correct
8	Correct	5 ms	7404 KB	Output is correct
9	Correct	5 ms	7404 KB	Output is correct
10	Correct	5 ms	7404 KB	Output is correct
11	Correct	5 ms	7404 KB	Output is correct
12	Correct	5 ms	7404 KB	Output is correct
13	Correct	6 ms	7404 KB	Output is correct
14	Correct	5 ms	7404 KB	Output is correct
15	Correct	5 ms	7404 KB	Output is correct
16	Correct	5 ms	7404 KB	Output is correct
17	Correct	5 ms	7404 KB	Output is correct
18	Correct	5 ms	7404 KB	Output is correct
19	Correct	5 ms	7404 KB	Output is correct
20	Correct	5 ms	7404 KB	Output is correct
21	Correct	5 ms	7404 KB	Output is correct
22	Correct	5 ms	7404 KB	Output is correct
23	Correct	5 ms	7404 KB	Output is correct
24	Correct	5 ms	7404 KB	Output is correct
25	Correct	5 ms	7404 KB	Output is correct
26	Correct	5 ms	7404 KB	Output is correct
27	Correct	5 ms	7404 KB	Output is correct
28	Correct	5 ms	7404 KB	Output is correct
29	Correct	5 ms	7404 KB	Output is correct
30	Correct	5 ms	7404 KB	Output is correct
31	Correct	5 ms	7404 KB	Output is correct
32	Correct	5 ms	7404 KB	Output is correct
33	Correct	5 ms	7404 KB	Output is correct
34	Correct	5 ms	7404 KB	Output is correct
35	Correct	5 ms	7404 KB	Output is correct
36	Correct	5 ms	7404 KB	Output is correct
37	Correct	5 ms	7404 KB	Output is correct
38	Correct	5 ms	7404 KB	Output is correct
39	Correct	5 ms	7404 KB	Output is correct
40	Correct	5 ms	7404 KB	Output is correct
41	Correct	5 ms	7404 KB	Output is correct
42	Correct	5 ms	7404 KB	Output is correct
43	Correct	5 ms	7404 KB	Output is correct
44	Correct	6 ms	7552 KB	Output is correct
45	Correct	6 ms	7392 KB	Output is correct
46	Correct	6 ms	7424 KB	Output is correct
47	Correct	5 ms	7404 KB	Output is correct
48	Correct	5 ms	7404 KB	Output is correct
49	Correct	5 ms	7404 KB	Output is correct
50	Correct	5 ms	7404 KB	Output is correct
51	Correct	5 ms	7404 KB	Output is correct
52	Correct	5 ms	7404 KB	Output is correct
53	Correct	5 ms	7404 KB	Output is correct
54	Correct	5 ms	7404 KB	Output is correct
55	Correct	5 ms	7404 KB	Output is correct
56	Correct	5 ms	7404 KB	Output is correct
57	Correct	5 ms	7404 KB	Output is correct
58	Correct	5 ms	7404 KB	Output is correct
59	Correct	5 ms	7404 KB	Output is correct
60	Correct	5 ms	7404 KB	Output is correct
61	Correct	5 ms	7404 KB	Output is correct
62	Correct	5 ms	7404 KB	Output is correct
63	Correct	5 ms	7404 KB	Output is correct
64	Correct	5 ms	7404 KB	Output is correct
65	Correct	5 ms	7404 KB	Output is correct
66	Incorrect	72 ms	23528 KB	Output isn't correct
67	Halted	0 ms	0 KB	-

답안 #371471

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