oj.uz

Submission #785744

# Submission time Handle Problem Language Result Execution time Memory
785744 2023-07-17T14:22:57 Z gagik_2007 Newspapers (CEOI21_newspapers) C++17
50 / 100
 56 ms 19328 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

#define ff first
#define ss second

ll ttt;
const ll INF=1e18;
const ll MOD=1e9+7;
const ll N=300007;
ll n,m,k;
vector<ll>g[N];
ll sz[N];
bool used[N];

void dfs(int v, int par=-1){
    // cout<<"YOO"<<endl;
    sz[v]=0;
    for(int to:g[v]){
        if(to!=par){
            dfs(to,v);
            sz[v]=max(sz[v],sz[to]+1);
        }
    }
}

bool is_tree(int v, int par=-1){
    used[v]=true;
    for(int to:g[v]){
        if(to!=par){
            if(used[to])return false;
            if(!is_tree(to,v))return false;
        }
    }
    return true;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    // freopen("output.txt","w",stdout);
    // freopen("input.txt","r",stdin);
    cin>>n>>m;
    // if(m!=n-1)cout<<"NO\n";
    for(int i=0;i<m;i++){
        int x,y;
        cin>>x>>y;
        g[x].push_back(y);
        g[y].push_back(x);
    }
    for(int v=1;v<=n;v++){
        if(!used[v]&&!is_tree(v)){
            cout<<"NO\n";
            return 0;
        }
    }
    for(int v=1;v<=n;v++){
        dfs(v);
        int cnt=0;
        for(int to:g[v]){
            cnt+=(sz[to]>=2);
        }
        if(cnt>2){
            cout<<"NO\n";
            return 0;
        }
    }
    cout<<"YES 1 1\n";
}

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7252 KB Output is correct
2 Partially correct 4 ms 7252 KB Failed to provide a successful strategy.
3 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
4 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
5 Partially correct 6 ms 7324 KB Failed to provide a successful strategy.
6 Partially correct 4 ms 7252 KB Failed to provide a successful strategy.
7 Correct 3 ms 7252 KB Output is correct
8 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
9 Correct 3 ms 7252 KB Output is correct
10 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
11 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
12 Partially correct 3 ms 7372 KB Failed to provide a successful strategy.
13 Partially correct 3 ms 7372 KB Failed to provide a successful strategy.
14 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
15 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
16 Partially correct 4 ms 7372 KB Failed to provide a successful strategy.
17 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
18 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
19 Partially correct 4 ms 7252 KB Failed to provide a successful strategy.
20 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
21 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
22 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
23 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
24 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
25 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
26 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
27 Partially correct 4 ms 7372 KB Failed to provide a successful strategy.
28 Partially correct 3 ms 7372 KB Failed to provide a successful strategy.
29 Correct 3 ms 7252 KB Output is correct
30 Partially correct 3 ms 7280 KB Failed to provide a successful strategy.
31 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
32 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
33 Partially correct 3 ms 7372 KB Failed to provide a successful strategy.
34 Correct 4 ms 7252 KB Output is correct
35 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
36 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
37 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
38 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
39 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
40 Partially correct 5 ms 7372 KB Failed to provide a successful strategy.
41 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
42 Partially correct 5 ms 7380 KB Failed to provide a successful strategy.
43 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
44 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
45 Correct 4 ms 7380 KB Output is correct
46 Correct 3 ms 7368 KB Output is correct
47 Correct 4 ms 7372 KB Output is correct
48 Partially correct 3 ms 7372 KB Failed to provide a successful strategy.
49 Correct 3 ms 7376 KB Output is correct
50 Correct 3 ms 7364 KB Output is correct
51 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
52 Correct 3 ms 7372 KB Output is correct
53 Correct 4 ms 7380 KB Output is correct
54 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
55 Correct 4 ms 7368 KB Output is correct
56 Correct 4 ms 7252 KB Output is correct
57 Correct 3 ms 7252 KB Output is correct
58 Correct 3 ms 7372 KB Output is correct
59 Correct 4 ms 7380 KB Output is correct
60 Correct 3 ms 7252 KB Output is correct
61 Correct 3 ms 7284 KB Output is correct
62 Correct 3 ms 7380 KB Output is correct
63 Correct 3 ms 7368 KB Output is correct
64 Correct 4 ms 7252 KB Output is correct

Subtask #2
4.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7252 KB Output is correct
2 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
3 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
4 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
5 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
6 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
7 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
8 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
9 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
10 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
11 Partially correct 10 ms 7488 KB Failed to provide a successful strategy.
12 Partially correct 5 ms 7380 KB Failed to provide a successful strategy.
13 Partially correct 7 ms 7380 KB Failed to provide a successful strategy.
14 Partially correct 7 ms 7380 KB Failed to provide a successful strategy.
15 Partially correct 7 ms 7456 KB Failed to provide a successful strategy.
16 Partially correct 13 ms 7412 KB Failed to provide a successful strategy.
17 Partially correct 11 ms 7492 KB Failed to provide a successful strategy.
18 Partially correct 11 ms 7492 KB Failed to provide a successful strategy.
19 Partially correct 13 ms 7492 KB Failed to provide a successful strategy.
20 Partially correct 12 ms 7492 KB Failed to provide a successful strategy.

Subtask #3
40.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7252 KB Output is correct
2 Partially correct 4 ms 7252 KB Failed to provide a successful strategy.
3 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
4 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
5 Partially correct 6 ms 7324 KB Failed to provide a successful strategy.
6 Partially correct 4 ms 7252 KB Failed to provide a successful strategy.
7 Correct 3 ms 7252 KB Output is correct
8 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
9 Correct 3 ms 7252 KB Output is correct
10 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
11 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
12 Partially correct 3 ms 7372 KB Failed to provide a successful strategy.
13 Partially correct 3 ms 7372 KB Failed to provide a successful strategy.
14 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
15 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
16 Partially correct 4 ms 7372 KB Failed to provide a successful strategy.
17 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
18 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
19 Partially correct 4 ms 7252 KB Failed to provide a successful strategy.
20 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
21 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
22 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
23 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
24 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
25 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
26 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
27 Partially correct 4 ms 7372 KB Failed to provide a successful strategy.
28 Partially correct 3 ms 7372 KB Failed to provide a successful strategy.
29 Correct 3 ms 7252 KB Output is correct
30 Partially correct 3 ms 7280 KB Failed to provide a successful strategy.
31 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
32 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
33 Partially correct 3 ms 7372 KB Failed to provide a successful strategy.
34 Correct 4 ms 7252 KB Output is correct
35 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
36 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
37 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
38 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
39 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
40 Partially correct 5 ms 7372 KB Failed to provide a successful strategy.
41 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
42 Partially correct 5 ms 7380 KB Failed to provide a successful strategy.
43 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
44 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
45 Correct 4 ms 7380 KB Output is correct
46 Correct 3 ms 7368 KB Output is correct
47 Correct 4 ms 7372 KB Output is correct
48 Partially correct 3 ms 7372 KB Failed to provide a successful strategy.
49 Correct 3 ms 7376 KB Output is correct
50 Correct 3 ms 7364 KB Output is correct
51 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
52 Correct 3 ms 7372 KB Output is correct
53 Correct 4 ms 7380 KB Output is correct
54 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
55 Correct 4 ms 7368 KB Output is correct
56 Correct 4 ms 7252 KB Output is correct
57 Correct 3 ms 7252 KB Output is correct
58 Correct 3 ms 7372 KB Output is correct
59 Correct 4 ms 7380 KB Output is correct
60 Correct 3 ms 7252 KB Output is correct
61 Correct 3 ms 7284 KB Output is correct
62 Correct 3 ms 7380 KB Output is correct
63 Correct 3 ms 7368 KB Output is correct
64 Correct 4 ms 7252 KB Output is correct
65 Correct 3 ms 7380 KB Output is correct
66 Partially correct 4 ms 7372 KB Failed to provide a successful strategy.
67 Partially correct 3 ms 7380 KB Failed to provide a successful strategy.
68 Partially correct 4 ms 7380 KB Failed to provide a successful strategy.
69 Partially correct 3 ms 7252 KB Failed to provide a successful strategy.
70 Partially correct 4 ms 7252 KB Failed to provide a successful strategy.
71 Correct 3 ms 7252 KB Output is correct
72 Partially correct 4 ms 7368 KB Failed to provide a successful strategy.
73 Correct 4 ms 7380 KB Output is correct
74 Partially correct 4 ms 7372 KB Failed to provide a successful strategy.
75 Partially correct 4 ms 7372 KB Failed to provide a successful strategy.
76 Partially correct 4 ms 7252 KB Failed to provide a successful strategy.
77 Partially correct 4 ms 7372 KB Failed to provide a successful strategy.
78 Partially correct 3 ms 7368 KB Failed to provide a successful strategy.
79 Correct 4 ms 7380 KB Output is correct
80 Correct 3 ms 7368 KB Output is correct
81 Correct 3 ms 7380 KB Output is correct
82 Correct 3 ms 7372 KB Output is correct
83 Correct 3 ms 7372 KB Output is correct
84 Correct 4 ms 7380 KB Output is correct
85 Correct 3 ms 7380 KB Output is correct
86 Correct 4 ms 7380 KB Output is correct
87 Correct 4 ms 7376 KB Output is correct
88 Correct 3 ms 7384 KB Output is correct
89 Partially correct 13 ms 7464 KB Failed to provide a successful strategy.
90 Partially correct 9 ms 7380 KB Failed to provide a successful strategy.
91 Partially correct 9 ms 7372 KB Failed to provide a successful strategy.
92 Partially correct 9 ms 7444 KB Failed to provide a successful strategy.
93 Partially correct 10 ms 7460 KB Failed to provide a successful strategy.
94 Partially correct 8 ms 7380 KB Failed to provide a successful strategy.
95 Partially correct 11 ms 7468 KB Failed to provide a successful strategy.
96 Partially correct 11 ms 7380 KB Failed to provide a successful strategy.
97 Partially correct 8 ms 7380 KB Failed to provide a successful strategy.
98 Partially correct 11 ms 7372 KB Failed to provide a successful strategy.
99 Partially correct 9 ms 7380 KB Failed to provide a successful strategy.
100 Partially correct 10 ms 7380 KB Failed to provide a successful strategy.
101 Partially correct 9 ms 7380 KB Failed to provide a successful strategy.
102 Partially correct 9 ms 7380 KB Failed to provide a successful strategy.
103 Partially correct 9 ms 7380 KB Failed to provide a successful strategy.
104 Partially correct 8 ms 7452 KB Failed to provide a successful strategy.
105 Partially correct 8 ms 7452 KB Failed to provide a successful strategy.
106 Partially correct 10 ms 7380 KB Failed to provide a successful strategy.
107 Partially correct 10 ms 7380 KB Failed to provide a successful strategy.
108 Partially correct 11 ms 7380 KB Failed to provide a successful strategy.
109 Partially correct 10 ms 7380 KB Failed to provide a successful strategy.
110 Partially correct 9 ms 7380 KB Failed to provide a successful strategy.
111 Partially correct 8 ms 7380 KB Failed to provide a successful strategy.
112 Partially correct 8 ms 7380 KB Failed to provide a successful strategy.
113 Partially correct 11 ms 7380 KB Failed to provide a successful strategy.
114 Partially correct 10 ms 7376 KB Failed to provide a successful strategy.
115 Partially correct 9 ms 7380 KB Failed to provide a successful strategy.
116 Partially correct 10 ms 7380 KB Failed to provide a successful strategy.
117 Partially correct 14 ms 7464 KB Failed to provide a successful strategy.
118 Partially correct 9 ms 7372 KB Failed to provide a successful strategy.
119 Partially correct 11 ms 7452 KB Failed to provide a successful strategy.
120 Partially correct 10 ms 7380 KB Failed to provide a successful strategy.
121 Partially correct 10 ms 7380 KB Failed to provide a successful strategy.
122 Partially correct 9 ms 7380 KB Failed to provide a successful strategy.
123 Partially correct 9 ms 7380 KB Failed to provide a successful strategy.
124 Partially correct 11 ms 7380 KB Failed to provide a successful strategy.
125 Partially correct 8 ms 7376 KB Failed to provide a successful strategy.
126 Partially correct 10 ms 7396 KB Failed to provide a successful strategy.
127 Partially correct 9 ms 7380 KB Failed to provide a successful strategy.
128 Partially correct 12 ms 7464 KB Failed to provide a successful strategy.
129 Correct 4 ms 7376 KB Output is correct
130 Correct 4 ms 7408 KB Output is correct
131 Correct 3 ms 7380 KB Output is correct
132 Correct 4 ms 7380 KB Output is correct
133 Correct 3 ms 7380 KB Output is correct
134 Correct 14 ms 9940 KB Output is correct
135 Correct 12 ms 9944 KB Output is correct
136 Correct 29 ms 15888 KB Output is correct
137 Correct 21 ms 12244 KB Output is correct
138 Correct 30 ms 14160 KB Output is correct
139 Correct 51 ms 19012 KB Output is correct
140 Correct 13 ms 9172 KB Output is correct
141 Correct 7 ms 7892 KB Output is correct
142 Correct 49 ms 18616 KB Output is correct
143 Correct 56 ms 19328 KB Output is correct
144 Partially correct 13 ms 7500 KB Failed to provide a successful strategy.
145 Partially correct 11 ms 7380 KB Failed to provide a successful strategy.