| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 934076 | 2024-02-26T18:47:59 Z | sysia | Newspapers (CEOI21_newspapers) | C++17 | 1 ms | 1012 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 u = R;
while (1){
curr.emplace_back(u);
if (u == L) break;
u = par[u];
}
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";
//teraz wypisac strategie
depth[L] = 0;
dfs(L, L, -1);
for (int v = 1; v <= n; v++) depth[v] %= 2;
debug(depth);
//depth mod 2 to kolory
//1) Bob znajdowal sie w kolorze 0 na poczatku
vector<int>ret;
auto solve = [&](int v, int left, int right, int turn){
debug(v, left, right);
if (depth[v] == turn) ret.emplace_back(v);
for (auto x: g[v]){
//teraz czarny kolor
if (x == left || x == right || (int)g[x].size() == 1) continue;
ret.emplace_back(x);
ret.emplace_back(v);
}
};
for (int rep = 0; rep < s; rep++){
int v = curr[rep];
int turn = ((int)ret.size() % 2);
solve(v, (rep ? curr[rep-1] : -1), (rep+1<s ? curr[rep+1] : -1), turn);
}
debug(ret);
int x = (int)ret.size();
for (int rep = 1; rep < s; rep++){
int v = curr[rep];
int turn = (((int)ret.size()-x+1) % 2);
solve(v, (rep > 1 ? curr[rep-1] : -1), (rep+1<s ? curr[rep+1] : -1), turn);
}
cout << (int)ret.size() << "\n";
for (auto xx: ret) cout << xx << " ";
cout << "\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;
}
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 344 KB | Output is correct |
| 2 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 3 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 4 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 5 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 6 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 7 | Correct | 1 ms | 348 KB | Output is correct |
| 8 | Partially correct | 1 ms | 344 KB | Failed to provide a successful strategy. |
| 9 | Correct | 0 ms | 348 KB | Output is correct |
| 10 | Partially correct | 1 ms | 348 KB | Failed to provide a successful strategy. |
| 11 | Partially correct | 1 ms | 348 KB | Failed to provide a successful strategy. |
| 12 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 13 | Partially correct | 1 ms | 344 KB | Provide a successful but not optimal strategy. |
| 14 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 15 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 16 | Partially correct | 0 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 | Provide a successful but not optimal strategy. |
| 20 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 21 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal 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 | 348 KB | Failed to provide a successful strategy. |
| 27 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 28 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 29 | Correct | 0 ms | 348 KB | Output is correct |
| 30 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 31 | Partially correct | 0 ms | 600 KB | Provide a successful but not optimal strategy. |
| 32 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 33 | Partially correct | 1 ms | 348 KB | Provide a successful but not optimal 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 | 1 ms | 344 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 | 344 KB | Provide a successful but not optimal strategy. |
| 39 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 40 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 41 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 42 | Partially correct | 1 ms | 348 KB | Provide a successful but not optimal strategy. |
| 43 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 44 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 45 | Correct | 0 ms | 348 KB | Output is correct |
| 46 | Correct | 0 ms | 348 KB | Output is correct |
| 47 | Correct | 0 ms | 360 KB | Output is correct |
| 48 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 49 | Correct | 1 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 | 0 ms | 348 KB | Output is correct |
| 56 | Correct | 0 ms | 452 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 | 348 KB | Output is correct |
| 62 | Correct | 0 ms | 348 KB | Output is correct |
| 63 | Correct | 0 ms | 348 KB | Output is correct |
| 64 | Correct | 0 ms | 348 KB | Output is correct |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 348 KB | Output is correct |
| 2 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 3 | Partially correct | 0 ms | 420 KB | Failed to provide a successful strategy. |
| 4 | Partially correct | 1 ms | 348 KB | Provide a successful but not optimal strategy. |
| 5 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 6 | Partially correct | 0 ms | 404 KB | Provide a successful but not optimal strategy. |
| 7 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 8 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 9 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 10 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 11 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |
| 12 | Partially correct | 1 ms | 348 KB | Failed to provide a successful strategy. |
| 13 | Partially correct | 1 ms | 600 KB | Provide a successful but not optimal strategy. |
| 14 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |
| 15 | Partially correct | 1 ms | 600 KB | Failed to provide a successful strategy. |
| 16 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |
| 17 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 18 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |
| 19 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 20 | Partially correct | 1 ms | 600 KB | Provide a successful but not optimal strategy. |
| # | 결과 | 실행 시간 | 메모리 | Grader output |
|---|---|---|---|---|
| 1 | Correct | 0 ms | 344 KB | Output is correct |
| 2 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 3 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 4 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 5 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 6 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 7 | Correct | 1 ms | 348 KB | Output is correct |
| 8 | Partially correct | 1 ms | 344 KB | Failed to provide a successful strategy. |
| 9 | Correct | 0 ms | 348 KB | Output is correct |
| 10 | Partially correct | 1 ms | 348 KB | Failed to provide a successful strategy. |
| 11 | Partially correct | 1 ms | 348 KB | Failed to provide a successful strategy. |
| 12 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 13 | Partially correct | 1 ms | 344 KB | Provide a successful but not optimal strategy. |
| 14 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 15 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 16 | Partially correct | 0 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 | Provide a successful but not optimal strategy. |
| 20 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 21 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal 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 | 348 KB | Failed to provide a successful strategy. |
| 27 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 28 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 29 | Correct | 0 ms | 348 KB | Output is correct |
| 30 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 31 | Partially correct | 0 ms | 600 KB | Provide a successful but not optimal strategy. |
| 32 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 33 | Partially correct | 1 ms | 348 KB | Provide a successful but not optimal 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 | 1 ms | 344 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 | 344 KB | Provide a successful but not optimal strategy. |
| 39 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 40 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 41 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 42 | Partially correct | 1 ms | 348 KB | Provide a successful but not optimal strategy. |
| 43 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 44 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 45 | Correct | 0 ms | 348 KB | Output is correct |
| 46 | Correct | 0 ms | 348 KB | Output is correct |
| 47 | Correct | 0 ms | 360 KB | Output is correct |
| 48 | Partially correct | 0 ms | 348 KB | Failed to provide a successful strategy. |
| 49 | Correct | 1 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 | 0 ms | 348 KB | Output is correct |
| 56 | Correct | 0 ms | 452 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 | 348 KB | Output is correct |
| 62 | Correct | 0 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 | 0 ms | 348 KB | Output is correct |
| 66 | Partially correct | 0 ms | 352 KB | Provide a successful but not optimal strategy. |
| 67 | Partially correct | 1 ms | 344 KB | Failed to provide a successful strategy. |
| 68 | Partially correct | 1 ms | 532 KB | Provide a successful but not optimal strategy. |
| 69 | Partially correct | 1 ms | 348 KB | Failed to provide a successful strategy. |
| 70 | Partially correct | 0 ms | 344 KB | Provide a successful but not optimal strategy. |
| 71 | Correct | 0 ms | 348 KB | Output is correct |
| 72 | Partially correct | 0 ms | 344 KB | Failed to provide a successful strategy. |
| 73 | Correct | 1 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 | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 77 | Partially correct | 0 ms | 348 KB | Provide a successful but not optimal strategy. |
| 78 | Partially correct | 0 ms | 348 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 | 0 ms | 348 KB | Output is correct |
| 82 | Correct | 1 ms | 348 KB | Output is correct |
| 83 | Correct | 0 ms | 348 KB | Output is correct |
| 84 | Correct | 1 ms | 348 KB | Output is correct |
| 85 | Correct | 1 ms | 520 KB | Output is correct |
| 86 | Correct | 1 ms | 348 KB | Output is correct |
| 87 | Correct | 1 ms | 348 KB | Output is correct |
| 88 | Correct | 1 ms | 348 KB | Output is correct |
| 89 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 90 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 91 | Partially correct | 1 ms | 604 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 | 604 KB | Failed to provide a successful strategy. |
| 94 | Partially correct | 1 ms | 600 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 | 600 KB | Provide a successful but not optimal strategy. |
| 97 | Partially correct | 1 ms | 348 KB | Failed to provide a successful strategy. |
| 98 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 99 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 100 | Partially correct | 1 ms | 600 KB | Failed to provide a successful strategy. |
| 101 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |
| 102 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 103 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 104 | Partially correct | 1 ms | 348 KB | Provide a successful but not optimal strategy. |
| 105 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 106 | Partially correct | 1 ms | 600 KB | Failed to provide a successful strategy. |
| 107 | Partially correct | 1 ms | 604 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 | 604 KB | Failed to provide a successful strategy. |
| 110 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |
| 111 | Partially correct | 1 ms | 600 KB | Provide a successful but not optimal strategy. |
| 112 | Partially correct | 1 ms | 600 KB | Provide a successful but not optimal strategy. |
| 113 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 114 | Partially correct | 1 ms | 600 KB | Failed to provide a successful strategy. |
| 115 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 116 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 117 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |
| 118 | Partially correct | 1 ms | 856 KB | Failed to provide a successful strategy. |
| 119 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |
| 120 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |
| 121 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 122 | Partially correct | 1 ms | 600 KB | Provide a successful but not optimal strategy. |
| 123 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 124 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 125 | Partially correct | 1 ms | 1012 KB | Failed to provide a successful strategy. |
| 126 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |
| 127 | Partially correct | 1 ms | 600 KB | Provide a successful but not optimal strategy. |
| 128 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 129 | Correct | 1 ms | 344 KB | Output is correct |
| 130 | Correct | 1 ms | 348 KB | Output is correct |
| 131 | Correct | 0 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 | 1 ms | 348 KB | Output is correct |
| 135 | Correct | 0 ms | 348 KB | Output is correct |
| 136 | Correct | 0 ms | 348 KB | Output is correct |
| 137 | Correct | 0 ms | 348 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 | 348 KB | Output is correct |
| 141 | Correct | 1 ms | 344 KB | Output is correct |
| 142 | Correct | 0 ms | 348 KB | Output is correct |
| 143 | Correct | 0 ms | 348 KB | Output is correct |
| 144 | Partially correct | 1 ms | 604 KB | Failed to provide a successful strategy. |
| 145 | Partially correct | 1 ms | 604 KB | Provide a successful but not optimal strategy. |