oj.uz

답안 #934064

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
934064 2024-02-26T18:26:36 Z sysia Newspapers (CEOI21_newspapers) C++17
50 / 100
 1 ms 604 KB 
//Sylwia Sapkowska
#include <bits/stdc++.h>
#pragma GCC optimize("O3", "unroll-loops")
using namespace std;

void __print(int x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << "'" << x << "'";}
void __print(const char *x) {cerr << '"' << x << '"';}
void __print(const string &x) {cerr << '"' << x << '"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ", "; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? ", " : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifdef LOCAL
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif

#define int long long
typedef pair<int, int> T;
const int oo = 1e18, oo2 = 1e9+7, K = 30;
const int mod = 998244353;

void solve(){
    int n, m; cin >> n >> m;
    if (m >= n){
        cout << "NO\n";
        return;
    } 
    vector<vector<int>>g(n+1);
    for (int i = 1; i<n; i++){
        int a, b; cin >> a >> b;
        g[a].emplace_back(b);
        g[b].emplace_back(a);
    }
    vector<int>depth(n+1), par(n+1);
    function<void(int, int, int)>dfs = [&](int v, int pa, int pa2=-1){
        par[v] = pa;
        for (auto x: g[v]){
            if (x == pa || x == pa2) continue;
            depth[x] = depth[v]+1;
            dfs(x, v, -1);
        }
    };
    dfs(1, 1, -1);
    T now = {-oo, -oo};
    for (int v = 1; v <= n; v++) now = max(now, T{depth[v], v});
    int L = now.second;
    depth[L] = 0;
    dfs(L, L, -1);
    now = {-oo, -oo};
    for (int v = 1; v <= n; v++) now = max(now, T{depth[v], v});
    int R = now.second;
    vector<int>curr;
    int v = R;
    while (1){
        curr.emplace_back(v);
        if (v == L) break;
        v = par[v];
    }
    reverse(curr.begin(), curr.end());
    debug(curr);
    int s = (int)curr.size();
    for (int rep = 0; rep < s; rep++){
        int v = curr[rep];
        depth[v] = 0;
        dfs(v, (rep ? curr[rep-1] : -1), (rep+1<s ? curr[rep+1] : -1));
    }
    debug(depth);
    if (*max_element(depth.begin(), depth.end()) > 2) {
        cout << "NO\n";
        return;
    }
    //fajna struktura drzewa miau
    cout << "YES\n";
    cout << "1\n1\n";
}


int32_t main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int t = 1;
    //cin >> t;
    while (t--) solve();

    return 0;
}

Subtask #1
6.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
3 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
5 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
6 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
7 Correct 0 ms 348 KB Output is correct
8 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
9 Correct 0 ms 348 KB Output is correct
10 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
11 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
12 Partially correct 0 ms 600 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 600 KB Failed to provide a successful strategy.
14 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
15 Partially correct 0 ms 460 KB Failed to provide a successful strategy.
16 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
17 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
18 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
19 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
20 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
21 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
22 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
23 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
24 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
25 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
26 Partially correct 0 ms 460 KB Failed to provide a successful strategy.
27 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
28 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
29 Correct 0 ms 348 KB Output is correct
30 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
31 Partially correct 0 ms 344 KB Failed to provide a successful strategy.
32 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
33 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
34 Correct 0 ms 348 KB Output is correct
35 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
36 Partially correct 0 ms 456 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 600 KB Failed to provide a successful strategy.
39 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
40 Partially correct 1 ms 456 KB Failed to provide a successful strategy.
41 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
42 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
43 Partially correct 0 ms 452 KB Failed to provide a successful strategy.
44 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
55 Correct 1 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 0 ms 344 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct

Subtask #2
4.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
3 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 344 KB Failed to provide a successful strategy.
5 Partially correct 0 ms 344 KB Failed to provide a successful strategy.
6 Partially correct 0 ms 452 KB Failed to provide a successful strategy.
7 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
8 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
9 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
10 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
11 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
12 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
14 Partially correct 0 ms 604 KB Failed to provide a successful strategy.
15 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
16 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
17 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
18 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
19 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
20 Partially correct 1 ms 604 KB Failed to provide a successful strategy.

Subtask #3
40.0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
3 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
4 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
5 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
6 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
7 Correct 0 ms 348 KB Output is correct
8 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
9 Correct 0 ms 348 KB Output is correct
10 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
11 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
12 Partially correct 0 ms 600 KB Failed to provide a successful strategy.
13 Partially correct 0 ms 600 KB Failed to provide a successful strategy.
14 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
15 Partially correct 0 ms 460 KB Failed to provide a successful strategy.
16 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
17 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
18 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
19 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
20 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
21 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
22 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
23 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
24 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
25 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
26 Partially correct 0 ms 460 KB Failed to provide a successful strategy.
27 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
28 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
29 Correct 0 ms 348 KB Output is correct
30 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
31 Partially correct 0 ms 344 KB Failed to provide a successful strategy.
32 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
33 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
34 Correct 0 ms 348 KB Output is correct
35 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
36 Partially correct 0 ms 456 KB Failed to provide a successful strategy.
37 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
38 Partially correct 0 ms 600 KB Failed to provide a successful strategy.
39 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
40 Partially correct 1 ms 456 KB Failed to provide a successful strategy.
41 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
42 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
43 Partially correct 0 ms 452 KB Failed to provide a successful strategy.
44 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
55 Correct 1 ms 348 KB Output is correct
56 Correct 0 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 0 ms 344 KB Output is correct
62 Correct 1 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 0 ms 348 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
67 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
68 Partially correct 0 ms 600 KB Failed to provide a successful strategy.
69 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
70 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
71 Correct 0 ms 348 KB Output is correct
72 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
73 Correct 0 ms 348 KB Output is correct
74 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
75 Partially correct 0 ms 348 KB Failed to provide a successful strategy.
76 Partially correct 1 ms 464 KB Failed to provide a successful strategy.
77 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
78 Partially correct 0 ms 456 KB Failed to provide a successful strategy.
79 Correct 1 ms 348 KB Output is correct
80 Correct 1 ms 348 KB Output is correct
81 Correct 1 ms 344 KB Output is correct
82 Correct 1 ms 348 KB Output is correct
83 Correct 1 ms 348 KB Output is correct
84 Correct 1 ms 348 KB Output is correct
85 Correct 1 ms 348 KB Output is correct
86 Correct 1 ms 352 KB Output is correct
87 Correct 1 ms 344 KB Output is correct
88 Correct 1 ms 348 KB Output is correct
89 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
90 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
91 Partially correct 1 ms 460 KB Failed to provide a successful strategy.
92 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
93 Partially correct 1 ms 344 KB Failed to provide a successful strategy.
94 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
95 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
96 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
97 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
98 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
99 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
100 Partially correct 1 ms 460 KB Failed to provide a successful strategy.
101 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
102 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
103 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
104 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
105 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
106 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
107 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
108 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
109 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
110 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
111 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
112 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
113 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
114 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
115 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
116 Partially correct 1 ms 600 KB Failed to provide a successful strategy.
117 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
118 Partially correct 1 ms 460 KB Failed to provide a successful strategy.
119 Partially correct 1 ms 344 KB Failed to provide a successful strategy.
120 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
121 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
122 Partially correct 1 ms 600 KB Failed to provide a successful strategy.
123 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
124 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
125 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
126 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
127 Partially correct 1 ms 348 KB Failed to provide a successful strategy.
128 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
129 Correct 1 ms 348 KB Output is correct
130 Correct 0 ms 348 KB Output is correct
131 Correct 1 ms 348 KB Output is correct
132 Correct 1 ms 348 KB Output is correct
133 Correct 1 ms 348 KB Output is correct
134 Correct 0 ms 348 KB Output is correct
135 Correct 0 ms 348 KB Output is correct
136 Correct 0 ms 344 KB Output is correct
137 Correct 1 ms 344 KB Output is correct
138 Correct 0 ms 348 KB Output is correct
139 Correct 0 ms 348 KB Output is correct
140 Correct 0 ms 344 KB Output is correct
141 Correct 0 ms 344 KB Output is correct
142 Correct 0 ms 348 KB Output is correct
143 Correct 1 ms 344 KB Output is correct
144 Partially correct 1 ms 604 KB Failed to provide a successful strategy.
145 Partially correct 1 ms 604 KB Failed to provide a successful strategy.