oj.uz

Submission #532581

# Submission time Handle Problem Language Result Execution time Memory
532581 2022-03-03T08:51:17 Z qwerasdfzxcl Newspapers (CEOI21_newspapers) C++14
50 / 100
 18 ms 444 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
constexpr int INF = 1e9;
vector<int> adj[1010];
int dist[2002000], n;
pair<int, int> par[2002000];

int _relax(int msk){
    int ret = 0;
    for (int i=1;i<=n;i++) if (msk&(1<<(i-1))){
        for (auto &v:adj[i]) ret |= (1<<(v-1));
    }
    return ret;
}

int dep[1010], pos[1010];
void dfs(int s, int pa = -1){
    for (auto &v:adj[s]) if (v!=pa){
        dep[v] = dep[s] + 1;
        if (pa==-1) pos[v] = v;
        else pos[v] = pos[s];
        dfs(v, s);
    }
}

int main(){
    int m;
    scanf("%d %d", &n, &m);
    if (m>n-1) {printf("NO\n"); return 0;}

    for (int i=0;i<m;i++){
        int x, y;
        scanf("%d %d", &x, &y);
        adj[x].push_back(y);
        adj[y].push_back(x);
    }

    for (int i=1;i<=n;i++){
        dep[i] = 0;
        dfs(i);
        set<int> S;
        for (int j=1;j<=n;j++) if (dep[j]==3) S.insert(pos[j]);
        if (S.size()>=3) {printf("NO\n"); return 0;}
    }

    printf("YES\n1\n1\n");
    return 0;

    int mx = (1<<n) - 1;
    fill(dist, dist+mx+1, INF);
    dist[mx] = 0;
    queue<int> q;
    q.push(mx);

    while(!q.empty()){
        int s = q.front(); q.pop();
        for (int i=0;i<n;i++){
            int v = s & (mx ^ (1<<i));
            v = _relax(v);
            if (dist[v]!=INF) continue;
            dist[v] = dist[s] + 1;
            par[v] = {s, i+1};
            q.push(v);
        }
    }

    if (dist[0]==INF) printf("NO\n");
    else{
        printf("YES\n");
        vector<int> ans;
        for (int cur = 0;cur!=mx;cur=par[cur].first) ans.push_back(par[cur].second);
        reverse(ans.begin(), ans.end());
        printf("%d\n", (int)ans.size());
        for (auto &x: ans) printf("%d ", x);
    }
    return 0;
}

Compilation message

newspapers.cpp: In function 'int main()':
newspapers.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
newspapers.cpp:35:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |         scanf("%d %d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
3 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
5 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
6 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
7 Correct 0 ms 332 KB Output is correct
8 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
9 Correct 0 ms 332 KB Output is correct
10 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
11 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
12 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
14 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
15 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
16 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
17 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
18 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
19 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
20 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
21 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
22 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
23 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
24 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
25 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
26 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
27 Partially correct 0 ms 204 KB Failed to provide a successful strategy.
28 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
29 Correct 0 ms 332 KB Output is correct
30 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
31 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
32 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
33 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
34 Correct 0 ms 332 KB Output is correct
35 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
36 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
39 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
40 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
41 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
42 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
43 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
44 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
45 Correct 0 ms 332 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
49 Correct 1 ms 332 KB Output is correct
50 Correct 0 ms 332 KB Output is correct
51 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
52 Correct 0 ms 332 KB Output is correct
53 Correct 0 ms 332 KB Output is correct
54 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 0 ms 332 KB Output is correct
58 Correct 0 ms 332 KB Output is correct
59 Correct 0 ms 204 KB Output is correct
60 Correct 0 ms 204 KB Output is correct
61 Correct 0 ms 332 KB Output is correct
62 Correct 0 ms 332 KB Output is correct
63 Correct 0 ms 332 KB Output is correct
64 Correct 1 ms 204 KB Output is correct

Subtask #2
4.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
3 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
5 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
6 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
7 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
8 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
9 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
10 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
11 Partially correct 13 ms 332 KB Failed to provide a successful strategy.
12 Partially correct 4 ms 332 KB Failed to provide a successful strategy.
13 Partially correct 5 ms 332 KB Failed to provide a successful strategy.
14 Partially correct 6 ms 332 KB Failed to provide a successful strategy.
15 Partially correct 7 ms 332 KB Failed to provide a successful strategy.
16 Partially correct 14 ms 332 KB Failed to provide a successful strategy.
17 Partially correct 14 ms 332 KB Failed to provide a successful strategy.
18 Partially correct 14 ms 444 KB Failed to provide a successful strategy.
19 Partially correct 13 ms 332 KB Failed to provide a successful strategy.
20 Partially correct 15 ms 332 KB Failed to provide a successful strategy.

Subtask #3
40.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
3 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
5 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
6 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
7 Correct 0 ms 332 KB Output is correct
8 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
9 Correct 0 ms 332 KB Output is correct
10 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
11 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
12 Partially correct 0 ms 212 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
14 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
15 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
16 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
17 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
18 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
19 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
20 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
21 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
22 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
23 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
24 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
25 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
26 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
27 Partially correct 0 ms 204 KB Failed to provide a successful strategy.
28 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
29 Correct 0 ms 332 KB Output is correct
30 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
31 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
32 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
33 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
34 Correct 0 ms 332 KB Output is correct
35 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
36 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
39 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
40 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
41 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
42 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
43 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
44 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
45 Correct 0 ms 332 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
49 Correct 1 ms 332 KB Output is correct
50 Correct 0 ms 332 KB Output is correct
51 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
52 Correct 0 ms 332 KB Output is correct
53 Correct 0 ms 332 KB Output is correct
54 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 0 ms 332 KB Output is correct
58 Correct 0 ms 332 KB Output is correct
59 Correct 0 ms 204 KB Output is correct
60 Correct 0 ms 204 KB Output is correct
61 Correct 0 ms 332 KB Output is correct
62 Correct 0 ms 332 KB Output is correct
63 Correct 0 ms 332 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
67 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
68 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
69 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
70 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
71 Correct 0 ms 332 KB Output is correct
72 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
73 Correct 0 ms 332 KB Output is correct
74 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
75 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
76 Partially correct 0 ms 332 KB Failed to provide a successful strategy.
77 Partially correct 1 ms 332 KB Failed to provide a successful strategy.
78 Partially correct 0 ms 332 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 332 KB Output is correct
83 Correct 1 ms 332 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 16 ms 400 KB Failed to provide a successful strategy.
90 Partially correct 12 ms 332 KB Failed to provide a successful strategy.
91 Partially correct 13 ms 332 KB Failed to provide a successful strategy.
92 Partially correct 10 ms 324 KB Failed to provide a successful strategy.
93 Partially correct 16 ms 332 KB Failed to provide a successful strategy.
94 Partially correct 11 ms 332 KB Failed to provide a successful strategy.
95 Partially correct 18 ms 412 KB Failed to provide a successful strategy.
96 Partially correct 16 ms 332 KB Failed to provide a successful strategy.
97 Partially correct 9 ms 332 KB Failed to provide a successful strategy.
98 Partially correct 16 ms 332 KB Failed to provide a successful strategy.
99 Partially correct 12 ms 332 KB Failed to provide a successful strategy.
100 Partially correct 13 ms 332 KB Failed to provide a successful strategy.
101 Partially correct 12 ms 332 KB Failed to provide a successful strategy.
102 Partially correct 12 ms 332 KB Failed to provide a successful strategy.
103 Partially correct 13 ms 400 KB Failed to provide a successful strategy.
104 Partially correct 9 ms 392 KB Failed to provide a successful strategy.
105 Partially correct 11 ms 332 KB Failed to provide a successful strategy.
106 Partially correct 15 ms 404 KB Failed to provide a successful strategy.
107 Partially correct 12 ms 400 KB Failed to provide a successful strategy.
108 Partially correct 16 ms 328 KB Failed to provide a successful strategy.
109 Partially correct 13 ms 404 KB Failed to provide a successful strategy.
110 Partially correct 13 ms 324 KB Failed to provide a successful strategy.
111 Partially correct 10 ms 332 KB Failed to provide a successful strategy.
112 Partially correct 11 ms 324 KB Failed to provide a successful strategy.
113 Partially correct 17 ms 332 KB Failed to provide a successful strategy.
114 Partially correct 14 ms 332 KB Failed to provide a successful strategy.
115 Partially correct 11 ms 332 KB Failed to provide a successful strategy.
116 Partially correct 13 ms 332 KB Failed to provide a successful strategy.
117 Partially correct 17 ms 332 KB Failed to provide a successful strategy.
118 Partially correct 14 ms 332 KB Failed to provide a successful strategy.
119 Partially correct 12 ms 324 KB Failed to provide a successful strategy.
120 Partially correct 15 ms 332 KB Failed to provide a successful strategy.
121 Partially correct 16 ms 332 KB Failed to provide a successful strategy.
122 Partially correct 11 ms 404 KB Failed to provide a successful strategy.
123 Partially correct 10 ms 392 KB Failed to provide a successful strategy.
124 Partially correct 16 ms 332 KB Failed to provide a successful strategy.
125 Partially correct 10 ms 324 KB Failed to provide a successful strategy.
126 Partially correct 10 ms 332 KB Failed to provide a successful strategy.
127 Partially correct 10 ms 400 KB Failed to provide a successful strategy.
128 Partially correct 17 ms 400 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 332 KB Output is correct
134 Correct 1 ms 332 KB Output is correct
135 Correct 1 ms 328 KB Output is correct
136 Correct 1 ms 332 KB Output is correct
137 Correct 0 ms 328 KB Output is correct
138 Correct 1 ms 324 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 332 KB Output is correct
142 Correct 1 ms 332 KB Output is correct
143 Correct 1 ms 336 KB Output is correct
144 Partially correct 14 ms 332 KB Failed to provide a successful strategy.
145 Partially correct 14 ms 444 KB Failed to provide a successful strategy.