Submission #532545

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
532545	2022-03-03T06:44:57 Z	79brue	Newspapers (CEOI21_newspapers)	C++14	50 / 100	85 ms	472 KB

newspapers

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int n, m;
vector<int> link[1002];

int dfs(int x, int par = -1){
    vector<int> vec (1, 0);
    for(auto y: link[x]){
        if(y==par) continue;
        int tmp = dfs(y, x);
        vec.push_back(tmp+1);
    }

    sort(vec.rbegin(), vec.rend());
    if(par == -1){
        if(vec.size() >= 3 && vec[2] >= 3){
            puts("NO");
            exit(0);
        }
    }
    return vec[0];
}

int main(){
    scanf("%d %d", &n, &m);
    if(m!=n-1){
        puts("NO");
        return 0;
    }

    for(int i=1; i<n; i++){
        int x, y;
        scanf("%d %d", &x, &y);
        link[x].push_back(y), link[y].push_back(x);
    }

    for(int i=1; i<=n; i++){
        dfs(i);
    }

    printf("YES\n2\n1 1");
}

Compilation message

newspapers.cpp: In function 'int main()':
newspapers.cpp:29:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
newspapers.cpp:37:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         scanf("%d %d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Partially correct	1 ms	204 KB	Provide a successful but not optimal strategy.
2	Correct	1 ms	204 KB	Output is correct
3	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
4	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
5	Correct	0 ms	312 KB	Output is correct
6	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
7	Correct	0 ms	204 KB	Output is correct
8	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
9	Correct	1 ms	204 KB	Output is correct
10	Partially correct	0 ms	316 KB	Failed to provide a successful strategy.
11	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
12	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
13	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
14	Partially correct	1 ms	316 KB	Failed to provide a successful strategy.
15	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
16	Partially correct	1 ms	320 KB	Failed to provide a successful strategy.
17	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
18	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
19	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
20	Partially correct	0 ms	312 KB	Failed to provide a successful strategy.
21	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
22	Partially correct	1 ms	316 KB	Failed to provide a successful strategy.
23	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
24	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
25	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
26	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
27	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
28	Partially correct	1 ms	316 KB	Failed to provide a successful strategy.
29	Correct	1 ms	204 KB	Output is correct
30	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
31	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
32	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
33	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
34	Correct	1 ms	204 KB	Output is correct
35	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
36	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
37	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
38	Partially correct	1 ms	320 KB	Failed to provide a successful strategy.
39	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
40	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
41	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
42	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
43	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
44	Partially correct	1 ms	332 KB	Failed to provide a successful strategy.
45	Correct	1 ms	204 KB	Output is correct
46	Correct	1 ms	204 KB	Output is correct
47	Correct	1 ms	316 KB	Output is correct
48	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
49	Correct	0 ms	204 KB	Output is correct
50	Correct	1 ms	316 KB	Output is correct
51	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
52	Correct	0 ms	204 KB	Output is correct
53	Correct	0 ms	204 KB	Output is correct
54	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
55	Correct	0 ms	204 KB	Output is correct
56	Correct	0 ms	204 KB	Output is correct
57	Correct	1 ms	312 KB	Output is correct
58	Correct	1 ms	264 KB	Output is correct
59	Correct	1 ms	316 KB	Output is correct
60	Correct	1 ms	204 KB	Output is correct
61	Correct	0 ms	204 KB	Output is correct
62	Correct	0 ms	312 KB	Output is correct
63	Correct	1 ms	204 KB	Output is correct
64	Correct	0 ms	204 KB	Output is correct

Subtask #2
4.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Partially correct	1 ms	204 KB	Provide a successful but not optimal strategy.
2	Correct	1 ms	204 KB	Output is correct
3	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
4	Partially correct	1 ms	316 KB	Failed to provide a successful strategy.
5	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
6	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
7	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
8	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
9	Partially correct	1 ms	320 KB	Failed to provide a successful strategy.
10	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
11	Partially correct	54 ms	460 KB	Failed to provide a successful strategy.
12	Partially correct	16 ms	332 KB	Failed to provide a successful strategy.
13	Partially correct	24 ms	332 KB	Failed to provide a successful strategy.
14	Partially correct	25 ms	332 KB	Failed to provide a successful strategy.
15	Partially correct	36 ms	420 KB	Failed to provide a successful strategy.
16	Partially correct	60 ms	460 KB	Failed to provide a successful strategy.
17	Partially correct	59 ms	460 KB	Failed to provide a successful strategy.
18	Partially correct	63 ms	460 KB	Failed to provide a successful strategy.
19	Partially correct	62 ms	468 KB	Failed to provide a successful strategy.
20	Partially correct	60 ms	472 KB	Failed to provide a successful strategy.

Subtask #3
40.0 / 80.0

#	Verdict	Execution time	Memory	Grader output
1	Partially correct	1 ms	204 KB	Provide a successful but not optimal strategy.
2	Correct	1 ms	204 KB	Output is correct
3	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
4	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
5	Correct	0 ms	312 KB	Output is correct
6	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
7	Correct	0 ms	204 KB	Output is correct
8	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
9	Correct	1 ms	204 KB	Output is correct
10	Partially correct	0 ms	316 KB	Failed to provide a successful strategy.
11	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
12	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
13	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
14	Partially correct	1 ms	316 KB	Failed to provide a successful strategy.
15	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
16	Partially correct	1 ms	320 KB	Failed to provide a successful strategy.
17	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
18	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
19	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
20	Partially correct	0 ms	312 KB	Failed to provide a successful strategy.
21	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
22	Partially correct	1 ms	316 KB	Failed to provide a successful strategy.
23	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
24	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
25	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
26	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
27	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
28	Partially correct	1 ms	316 KB	Failed to provide a successful strategy.
29	Correct	1 ms	204 KB	Output is correct
30	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
31	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
32	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
33	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
34	Correct	1 ms	204 KB	Output is correct
35	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
36	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
37	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
38	Partially correct	1 ms	320 KB	Failed to provide a successful strategy.
39	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
40	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
41	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
42	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
43	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
44	Partially correct	1 ms	332 KB	Failed to provide a successful strategy.
45	Correct	1 ms	204 KB	Output is correct
46	Correct	1 ms	204 KB	Output is correct
47	Correct	1 ms	316 KB	Output is correct
48	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
49	Correct	0 ms	204 KB	Output is correct
50	Correct	1 ms	316 KB	Output is correct
51	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
52	Correct	0 ms	204 KB	Output is correct
53	Correct	0 ms	204 KB	Output is correct
54	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
55	Correct	0 ms	204 KB	Output is correct
56	Correct	0 ms	204 KB	Output is correct
57	Correct	1 ms	312 KB	Output is correct
58	Correct	1 ms	264 KB	Output is correct
59	Correct	1 ms	316 KB	Output is correct
60	Correct	1 ms	204 KB	Output is correct
61	Correct	0 ms	204 KB	Output is correct
62	Correct	0 ms	312 KB	Output is correct
63	Correct	1 ms	204 KB	Output is correct
64	Correct	0 ms	204 KB	Output is correct
65	Partially correct	1 ms	204 KB	Provide a successful but not optimal strategy.
66	Correct	1 ms	316 KB	Output is correct
67	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
68	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
69	Correct	1 ms	204 KB	Output is correct
70	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
71	Correct	1 ms	204 KB	Output is correct
72	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
73	Correct	0 ms	312 KB	Output is correct
74	Partially correct	1 ms	312 KB	Failed to provide a successful strategy.
75	Partially correct	0 ms	204 KB	Failed to provide a successful strategy.
76	Partially correct	1 ms	316 KB	Failed to provide a successful strategy.
77	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
78	Partially correct	1 ms	204 KB	Failed to provide a successful strategy.
79	Correct	1 ms	332 KB	Output is correct
80	Correct	1 ms	332 KB	Output is correct
81	Correct	1 ms	332 KB	Output is correct
82	Correct	1 ms	300 KB	Output is correct
83	Correct	1 ms	320 KB	Output is correct
84	Correct	1 ms	332 KB	Output is correct
85	Correct	1 ms	332 KB	Output is correct
86	Correct	1 ms	332 KB	Output is correct
87	Correct	1 ms	332 KB	Output is correct
88	Correct	1 ms	332 KB	Output is correct
89	Partially correct	76 ms	332 KB	Failed to provide a successful strategy.
90	Partially correct	58 ms	380 KB	Failed to provide a successful strategy.
91	Partially correct	54 ms	332 KB	Failed to provide a successful strategy.
92	Partially correct	47 ms	452 KB	Failed to provide a successful strategy.
93	Partially correct	72 ms	392 KB	Failed to provide a successful strategy.
94	Partially correct	51 ms	372 KB	Failed to provide a successful strategy.
95	Partially correct	77 ms	404 KB	Failed to provide a successful strategy.
96	Partially correct	74 ms	396 KB	Failed to provide a successful strategy.
97	Partially correct	44 ms	332 KB	Failed to provide a successful strategy.
98	Partially correct	72 ms	416 KB	Failed to provide a successful strategy.
99	Partially correct	64 ms	332 KB	Failed to provide a successful strategy.
100	Partially correct	58 ms	332 KB	Failed to provide a successful strategy.
101	Partially correct	58 ms	324 KB	Failed to provide a successful strategy.
102	Partially correct	56 ms	380 KB	Failed to provide a successful strategy.
103	Partially correct	61 ms	332 KB	Failed to provide a successful strategy.
104	Partially correct	47 ms	368 KB	Failed to provide a successful strategy.
105	Partially correct	49 ms	380 KB	Failed to provide a successful strategy.
106	Partially correct	64 ms	388 KB	Failed to provide a successful strategy.
107	Partially correct	51 ms	332 KB	Failed to provide a successful strategy.
108	Partially correct	75 ms	332 KB	Failed to provide a successful strategy.
109	Partially correct	59 ms	380 KB	Failed to provide a successful strategy.
110	Partially correct	58 ms	380 KB	Failed to provide a successful strategy.
111	Partially correct	51 ms	388 KB	Failed to provide a successful strategy.
112	Partially correct	51 ms	384 KB	Failed to provide a successful strategy.
113	Partially correct	77 ms	400 KB	Failed to provide a successful strategy.
114	Partially correct	63 ms	388 KB	Failed to provide a successful strategy.
115	Partially correct	55 ms	400 KB	Failed to provide a successful strategy.
116	Partially correct	63 ms	400 KB	Failed to provide a successful strategy.
117	Partially correct	77 ms	400 KB	Failed to provide a successful strategy.
118	Partially correct	64 ms	392 KB	Failed to provide a successful strategy.
119	Partially correct	58 ms	332 KB	Failed to provide a successful strategy.
120	Partially correct	68 ms	404 KB	Failed to provide a successful strategy.
121	Partially correct	68 ms	332 KB	Failed to provide a successful strategy.
122	Partially correct	58 ms	332 KB	Failed to provide a successful strategy.
123	Partially correct	50 ms	332 KB	Failed to provide a successful strategy.
124	Partially correct	73 ms	396 KB	Failed to provide a successful strategy.
125	Partially correct	44 ms	320 KB	Failed to provide a successful strategy.
126	Partially correct	48 ms	332 KB	Failed to provide a successful strategy.
127	Partially correct	47 ms	376 KB	Failed to provide a successful strategy.
128	Partially correct	85 ms	388 KB	Failed to provide a successful strategy.
129	Correct	1 ms	332 KB	Output is correct
130	Correct	1 ms	332 KB	Output is correct
131	Correct	1 ms	332 KB	Output is correct
132	Correct	1 ms	332 KB	Output is correct
133	Correct	1 ms	320 KB	Output is correct
134	Correct	1 ms	204 KB	Output is correct
135	Correct	0 ms	204 KB	Output is correct
136	Correct	1 ms	204 KB	Output is correct
137	Correct	0 ms	204 KB	Output is correct
138	Correct	1 ms	204 KB	Output is correct
139	Correct	1 ms	332 KB	Output is correct
140	Correct	1 ms	332 KB	Output is correct
141	Correct	1 ms	328 KB	Output is correct
142	Correct	1 ms	332 KB	Output is correct
143	Correct	1 ms	332 KB	Output is correct
144	Partially correct	61 ms	460 KB	Failed to provide a successful strategy.
145	Partially correct	63 ms	472 KB	Failed to provide a successful strategy.

Submission #532545

Compilation message

Subtask #1 6.0 / 12.0

Subtask #2 4.0 / 8.0

Subtask #3 40.0 / 80.0

Subtask #1
6.0 / 12.0

Subtask #2
4.0 / 8.0

Subtask #3
40.0 / 80.0