답안 #930545

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
930545	2024-02-20T06:00:31 Z	Ghulam_Junaid	Joker (BOI20_joker)	C++17	39 / 100	2000 ms	218816 KB

Joker

#include <bits/stdc++.h>
using namespace std;

const int N = 2e5 + 3;
int n, m, q, vis_nq[N], par[N], col[N];
vector<pair<int, int>> g[N], atl[N];
pair<int, int> edge[N];
vector<int> S[N];
bool ans[N];

int root(int v){
    return (par[v] == -1 ? v : par[v] = root(par[v]));
}

inline bool merge(int u, int v){
    int r1 = root(u);
    int r2 = root(v);

    if (r1 == r2)
        return (col[u] != col[v]);

    if (S[r2].size() > S[r1].size())
        swap(r1, r2);

    int take = 0;
    if (col[u] == col[v])
        take = 3;

    for (int x : S[r2]){
        col[x] ^= take;
        S[r1].push_back(x);
        par[x] = r1;
    }
    S[r2].clear();
    return 1;
}

int main(){
    scanf("%d%d%d", &n, &m, &q);
    for (int i = 1; i <= m; i ++){
        int u, v;
        scanf("%d%d", &u, &v);

        g[u].push_back({i, v});
        g[v].push_back({i, u});
        edge[i] = {u, v};
    }

    int mx = 0;
    for (int i = 0; i < q; i ++){
        int l, r;
        scanf("%d%d", &l, &r);
        mx = max(mx, l);
        atl[l].push_back({r, i});
    }

    for (int i = 1; i <= mx; i ++){
        if (atl[i].size() < 2) continue;

        sort(atl[i].begin(), atl[i].end());
        reverse(atl[i].begin(), atl[i].end());
    }

    for (int i = 1; i <= mx; i ++){
        if (atl[i].size() == 0) continue;

        for (int j = 1; j <= n; j ++){
            S[j].clear();
            S[j].push_back(j);

            par[j] = -1;
            col[j] = 1;
        }

        bool even = 1;
        for (int j = 1; j < i; j ++)
            even &= merge(edge[j].first, edge[j].second);

        int x = m;
        for (auto [r, id] : atl[i]){
            for (int j = r + 1; j <= x; j ++)
                even &= merge(edge[j].first, edge[j].second);
            x = r;

            if (even)
                ans[id] = 0;
            else
                ans[id] = 1;
        }
    }

    for (int i = 0; i < q; i ++){
        if (ans[i])
            printf("YES\n");
        else
            printf("NO\n");
    }
}

Compilation message

Joker.cpp: In function 'int main()':
Joker.cpp:39:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |     scanf("%d%d%d", &n, &m, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
Joker.cpp:42:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |         scanf("%d%d", &u, &v);
      |         ~~~~~^~~~~~~~~~~~~~~~
Joker.cpp:52:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |         scanf("%d%d", &l, &r);
      |         ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	16732 KB	Output is correct
2	Correct	4 ms	16732 KB	Output is correct
3	Correct	4 ms	16728 KB	Output is correct
4	Correct	4 ms	16840 KB	Output is correct
5	Correct	4 ms	16732 KB	Output is correct
6	Correct	4 ms	16732 KB	Output is correct
7	Correct	4 ms	16828 KB	Output is correct
8	Correct	4 ms	16732 KB	Output is correct
9	Correct	4 ms	16732 KB	Output is correct
10	Correct	5 ms	16732 KB	Output is correct
11	Correct	6 ms	16732 KB	Output is correct
12	Correct	4 ms	16732 KB	Output is correct
13	Correct	5 ms	16732 KB	Output is correct
14	Correct	4 ms	16732 KB	Output is correct
15	Correct	4 ms	16732 KB	Output is correct
16	Correct	4 ms	16732 KB	Output is correct
17	Correct	4 ms	16732 KB	Output is correct
18	Correct	4 ms	16732 KB	Output is correct
19	Correct	4 ms	16732 KB	Output is correct
20	Correct	4 ms	16732 KB	Output is correct
21	Correct	4 ms	16728 KB	Output is correct
22	Correct	4 ms	16732 KB	Output is correct
23	Correct	5 ms	16844 KB	Output is correct
24	Correct	4 ms	16732 KB	Output is correct
25	Correct	4 ms	16732 KB	Output is correct
26	Correct	4 ms	16884 KB	Output is correct
27	Correct	4 ms	16732 KB	Output is correct
28	Correct	4 ms	16732 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	16732 KB	Output is correct
2	Correct	4 ms	16732 KB	Output is correct
3	Correct	4 ms	16728 KB	Output is correct
4	Correct	4 ms	16840 KB	Output is correct
5	Correct	4 ms	16732 KB	Output is correct
6	Correct	4 ms	16732 KB	Output is correct
7	Correct	4 ms	16828 KB	Output is correct
8	Correct	4 ms	16732 KB	Output is correct
9	Correct	4 ms	16732 KB	Output is correct
10	Correct	5 ms	16732 KB	Output is correct
11	Correct	6 ms	16732 KB	Output is correct
12	Correct	4 ms	16732 KB	Output is correct
13	Correct	5 ms	16732 KB	Output is correct
14	Correct	4 ms	16732 KB	Output is correct
15	Correct	4 ms	16732 KB	Output is correct
16	Correct	4 ms	16732 KB	Output is correct
17	Correct	4 ms	16732 KB	Output is correct
18	Correct	4 ms	16732 KB	Output is correct
19	Correct	4 ms	16732 KB	Output is correct
20	Correct	4 ms	16732 KB	Output is correct
21	Correct	4 ms	16728 KB	Output is correct
22	Correct	4 ms	16732 KB	Output is correct
23	Correct	5 ms	16844 KB	Output is correct
24	Correct	4 ms	16732 KB	Output is correct
25	Correct	4 ms	16732 KB	Output is correct
26	Correct	4 ms	16884 KB	Output is correct
27	Correct	4 ms	16732 KB	Output is correct
28	Correct	4 ms	16732 KB	Output is correct
29	Correct	22 ms	17044 KB	Output is correct
30	Correct	37 ms	17228 KB	Output is correct
31	Correct	37 ms	17240 KB	Output is correct
32	Correct	26 ms	16988 KB	Output is correct
33	Correct	19 ms	16988 KB	Output is correct
34	Correct	40 ms	17244 KB	Output is correct
35	Correct	42 ms	17244 KB	Output is correct
36	Correct	28 ms	17244 KB	Output is correct
37	Correct	47 ms	19320 KB	Output is correct
38	Correct	51 ms	18268 KB	Output is correct
39	Correct	37 ms	17508 KB	Output is correct
40	Correct	29 ms	17144 KB	Output is correct
41	Correct	27 ms	17240 KB	Output is correct
42	Correct	26 ms	16988 KB	Output is correct
43	Correct	22 ms	16988 KB	Output is correct
44	Correct	29 ms	16988 KB	Output is correct
45	Correct	40 ms	17244 KB	Output is correct
46	Correct	46 ms	17496 KB	Output is correct
47	Correct	24 ms	16988 KB	Output is correct
48	Correct	26 ms	16984 KB	Output is correct
49	Correct	35 ms	17540 KB	Output is correct
50	Correct	42 ms	17240 KB	Output is correct
51	Correct	22 ms	16984 KB	Output is correct
52	Correct	26 ms	16984 KB	Output is correct
53	Correct	37 ms	17108 KB	Output is correct
54	Correct	42 ms	17244 KB	Output is correct

Subtask #3
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	16732 KB	Output is correct
2	Correct	4 ms	16732 KB	Output is correct
3	Correct	106 ms	28644 KB	Output is correct
4	Correct	140 ms	35316 KB	Output is correct
5	Correct	134 ms	33988 KB	Output is correct
6	Correct	123 ms	29540 KB	Output is correct
7	Correct	138 ms	30448 KB	Output is correct
8	Correct	113 ms	27328 KB	Output is correct
9	Correct	114 ms	29576 KB	Output is correct
10	Correct	144 ms	35560 KB	Output is correct
11	Correct	136 ms	29508 KB	Output is correct
12	Correct	137 ms	33756 KB	Output is correct
13	Correct	97 ms	25024 KB	Output is correct
14	Correct	112 ms	27072 KB	Output is correct
15	Correct	131 ms	31684 KB	Output is correct
16	Correct	150 ms	35384 KB	Output is correct

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	16732 KB	Output is correct
2	Correct	4 ms	16732 KB	Output is correct
3	Correct	4 ms	16728 KB	Output is correct
4	Correct	4 ms	16840 KB	Output is correct
5	Correct	4 ms	16732 KB	Output is correct
6	Correct	4 ms	16732 KB	Output is correct
7	Correct	4 ms	16828 KB	Output is correct
8	Correct	4 ms	16732 KB	Output is correct
9	Correct	4 ms	16732 KB	Output is correct
10	Correct	5 ms	16732 KB	Output is correct
11	Correct	6 ms	16732 KB	Output is correct
12	Correct	4 ms	16732 KB	Output is correct
13	Correct	5 ms	16732 KB	Output is correct
14	Correct	4 ms	16732 KB	Output is correct
15	Correct	4 ms	16732 KB	Output is correct
16	Correct	4 ms	16732 KB	Output is correct
17	Correct	4 ms	16732 KB	Output is correct
18	Correct	4 ms	16732 KB	Output is correct
19	Correct	4 ms	16732 KB	Output is correct
20	Correct	4 ms	16732 KB	Output is correct
21	Correct	4 ms	16728 KB	Output is correct
22	Correct	4 ms	16732 KB	Output is correct
23	Correct	5 ms	16844 KB	Output is correct
24	Correct	4 ms	16732 KB	Output is correct
25	Correct	4 ms	16732 KB	Output is correct
26	Correct	4 ms	16884 KB	Output is correct
27	Correct	4 ms	16732 KB	Output is correct
28	Correct	4 ms	16732 KB	Output is correct
29	Correct	106 ms	28644 KB	Output is correct
30	Correct	140 ms	35316 KB	Output is correct
31	Correct	134 ms	33988 KB	Output is correct
32	Correct	123 ms	29540 KB	Output is correct
33	Correct	138 ms	30448 KB	Output is correct
34	Correct	113 ms	27328 KB	Output is correct
35	Correct	114 ms	29576 KB	Output is correct
36	Correct	144 ms	35560 KB	Output is correct
37	Correct	136 ms	29508 KB	Output is correct
38	Correct	137 ms	33756 KB	Output is correct
39	Correct	97 ms	25024 KB	Output is correct
40	Correct	112 ms	27072 KB	Output is correct
41	Correct	131 ms	31684 KB	Output is correct
42	Correct	150 ms	35384 KB	Output is correct
43	Correct	1562 ms	192668 KB	Output is correct
44	Execution timed out	2050 ms	218816 KB	Time limit exceeded
45	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	16732 KB	Output is correct
2	Correct	4 ms	16732 KB	Output is correct
3	Correct	4 ms	16728 KB	Output is correct
4	Correct	4 ms	16840 KB	Output is correct
5	Correct	4 ms	16732 KB	Output is correct
6	Correct	4 ms	16732 KB	Output is correct
7	Correct	4 ms	16828 KB	Output is correct
8	Correct	4 ms	16732 KB	Output is correct
9	Correct	4 ms	16732 KB	Output is correct
10	Correct	5 ms	16732 KB	Output is correct
11	Correct	6 ms	16732 KB	Output is correct
12	Correct	4 ms	16732 KB	Output is correct
13	Correct	5 ms	16732 KB	Output is correct
14	Correct	4 ms	16732 KB	Output is correct
15	Correct	4 ms	16732 KB	Output is correct
16	Correct	4 ms	16732 KB	Output is correct
17	Correct	4 ms	16732 KB	Output is correct
18	Correct	4 ms	16732 KB	Output is correct
19	Correct	4 ms	16732 KB	Output is correct
20	Correct	4 ms	16732 KB	Output is correct
21	Correct	4 ms	16728 KB	Output is correct
22	Correct	4 ms	16732 KB	Output is correct
23	Correct	5 ms	16844 KB	Output is correct
24	Correct	4 ms	16732 KB	Output is correct
25	Correct	4 ms	16732 KB	Output is correct
26	Correct	4 ms	16884 KB	Output is correct
27	Correct	4 ms	16732 KB	Output is correct
28	Correct	4 ms	16732 KB	Output is correct
29	Correct	22 ms	17044 KB	Output is correct
30	Correct	37 ms	17228 KB	Output is correct
31	Correct	37 ms	17240 KB	Output is correct
32	Correct	26 ms	16988 KB	Output is correct
33	Correct	19 ms	16988 KB	Output is correct
34	Correct	40 ms	17244 KB	Output is correct
35	Correct	42 ms	17244 KB	Output is correct
36	Correct	28 ms	17244 KB	Output is correct
37	Correct	47 ms	19320 KB	Output is correct
38	Correct	51 ms	18268 KB	Output is correct
39	Correct	37 ms	17508 KB	Output is correct
40	Correct	29 ms	17144 KB	Output is correct
41	Correct	27 ms	17240 KB	Output is correct
42	Correct	26 ms	16988 KB	Output is correct
43	Correct	22 ms	16988 KB	Output is correct
44	Correct	29 ms	16988 KB	Output is correct
45	Correct	40 ms	17244 KB	Output is correct
46	Correct	46 ms	17496 KB	Output is correct
47	Correct	24 ms	16988 KB	Output is correct
48	Correct	26 ms	16984 KB	Output is correct
49	Correct	35 ms	17540 KB	Output is correct
50	Correct	42 ms	17240 KB	Output is correct
51	Correct	22 ms	16984 KB	Output is correct
52	Correct	26 ms	16984 KB	Output is correct
53	Correct	37 ms	17108 KB	Output is correct
54	Correct	42 ms	17244 KB	Output is correct
55	Execution timed out	2045 ms	177616 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	16732 KB	Output is correct
2	Correct	4 ms	16732 KB	Output is correct
3	Correct	4 ms	16728 KB	Output is correct
4	Correct	4 ms	16840 KB	Output is correct
5	Correct	4 ms	16732 KB	Output is correct
6	Correct	4 ms	16732 KB	Output is correct
7	Correct	4 ms	16828 KB	Output is correct
8	Correct	4 ms	16732 KB	Output is correct
9	Correct	4 ms	16732 KB	Output is correct
10	Correct	5 ms	16732 KB	Output is correct
11	Correct	6 ms	16732 KB	Output is correct
12	Correct	4 ms	16732 KB	Output is correct
13	Correct	5 ms	16732 KB	Output is correct
14	Correct	4 ms	16732 KB	Output is correct
15	Correct	4 ms	16732 KB	Output is correct
16	Correct	4 ms	16732 KB	Output is correct
17	Correct	4 ms	16732 KB	Output is correct
18	Correct	4 ms	16732 KB	Output is correct
19	Correct	4 ms	16732 KB	Output is correct
20	Correct	4 ms	16732 KB	Output is correct
21	Correct	4 ms	16728 KB	Output is correct
22	Correct	4 ms	16732 KB	Output is correct
23	Correct	5 ms	16844 KB	Output is correct
24	Correct	4 ms	16732 KB	Output is correct
25	Correct	4 ms	16732 KB	Output is correct
26	Correct	4 ms	16884 KB	Output is correct
27	Correct	4 ms	16732 KB	Output is correct
28	Correct	4 ms	16732 KB	Output is correct
29	Correct	22 ms	17044 KB	Output is correct
30	Correct	37 ms	17228 KB	Output is correct
31	Correct	37 ms	17240 KB	Output is correct
32	Correct	26 ms	16988 KB	Output is correct
33	Correct	19 ms	16988 KB	Output is correct
34	Correct	40 ms	17244 KB	Output is correct
35	Correct	42 ms	17244 KB	Output is correct
36	Correct	28 ms	17244 KB	Output is correct
37	Correct	47 ms	19320 KB	Output is correct
38	Correct	51 ms	18268 KB	Output is correct
39	Correct	37 ms	17508 KB	Output is correct
40	Correct	29 ms	17144 KB	Output is correct
41	Correct	27 ms	17240 KB	Output is correct
42	Correct	26 ms	16988 KB	Output is correct
43	Correct	22 ms	16988 KB	Output is correct
44	Correct	29 ms	16988 KB	Output is correct
45	Correct	40 ms	17244 KB	Output is correct
46	Correct	46 ms	17496 KB	Output is correct
47	Correct	24 ms	16988 KB	Output is correct
48	Correct	26 ms	16984 KB	Output is correct
49	Correct	35 ms	17540 KB	Output is correct
50	Correct	42 ms	17240 KB	Output is correct
51	Correct	22 ms	16984 KB	Output is correct
52	Correct	26 ms	16984 KB	Output is correct
53	Correct	37 ms	17108 KB	Output is correct
54	Correct	42 ms	17244 KB	Output is correct
55	Correct	106 ms	28644 KB	Output is correct
56	Correct	140 ms	35316 KB	Output is correct
57	Correct	134 ms	33988 KB	Output is correct
58	Correct	123 ms	29540 KB	Output is correct
59	Correct	138 ms	30448 KB	Output is correct
60	Correct	113 ms	27328 KB	Output is correct
61	Correct	114 ms	29576 KB	Output is correct
62	Correct	144 ms	35560 KB	Output is correct
63	Correct	136 ms	29508 KB	Output is correct
64	Correct	137 ms	33756 KB	Output is correct
65	Correct	97 ms	25024 KB	Output is correct
66	Correct	112 ms	27072 KB	Output is correct
67	Correct	131 ms	31684 KB	Output is correct
68	Correct	150 ms	35384 KB	Output is correct
69	Correct	1562 ms	192668 KB	Output is correct
70	Execution timed out	2050 ms	218816 KB	Time limit exceeded
71	Halted	0 ms	0 KB	-

답안 #930545

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 25.0 / 25.0

Subtask #4 0 / 10.0

Subtask #5 0 / 22.0

Subtask #6 0 / 29.0

Subtask #1
6.0 / 6.0

Subtask #2
8.0 / 8.0

Subtask #3
25.0 / 25.0

Subtask #4
0 / 10.0

Subtask #5
0 / 22.0

Subtask #6
0 / 29.0