Submission #928164

#TimeUsernameProblemLanguageResultExecution timeMemory
928164trMatherzBurza (COCI16_burza)C++17
0 / 160
1 ms536 KiB
#include <iostream> //cin, cout /* #include <fstream> std::ifstream cin ("ex.in"); std::ofstream cout ("ex.out"); */ // includes #include <cmath> #include <set> #include <map> #include <queue> #include <string> #include <vector> #include <array> #include <algorithm> #include <numeric> #include <iomanip> #include <unordered_set> #include <stack> #include <ext/pb_ds/assoc_container.hpp> #include <random> #include <chrono> #include <bitset> #include <complex> //usings using namespace std; using namespace __gnu_pbds; // misc #define ll long long #define ld long double #define pb push_back #define pq priority_queue #define ub upper_bound #define lb lower_bound template<typename T, typename U> bool emin(T &a, const U &b){ return b < a ? a = b, true : false; } template<typename T, typename U> bool emax(T &a, const U &b){ return b > a ? a = b, true : false; } typedef uint64_t hash_t; // vectors #define vi vector<int> #define vvi vector<vi> #define vvvi vector<vvi> #define vpii vector<pair<int, int>> #define vvpii vector<vector<pair<int, int>>> #define vppipi vector<pair<int, pair<int, int>>> #define vl vector<ll> #define vvl vector<vl> #define vvvl vector<vvl> #define vpll vector<pair<ll, ll>> #define vvpll vector<vpll> #define vb vector<bool> #define vvb vector<vb> #define vs vector<string> #define sz(x) (int)x.size() #define rz resize #define all(x) x.begin(), x.end() // pairs #define pii pair<int, int> #define pll pair<ll, ll> #define mp make_pair #define f first #define s second // sets #define si set<int> #define sl set<ll> #define ss set<string> #define in insert template <class T> using iset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>; // maps #define mii map<int, int> #define mll map<ll, ll> // loops #define FR(x, z, y) for (int x = z; x < y; x++) #define FRE(x, z, y) FR(x, z, y + 1) #define F(x, y) FR(x, 0, y) #define FE(x, y) F(x, y + 1) #define A(x, y) for(auto &x : y) vvi a; vi dp; int n; void dfs(int x, int p){ int top = 0, sec = 0; A(u, a[x]) { if(u == p) continue; dfs(u, x); if(dp[u] > top) sec = top, top = dp[u]; else if(dp[u] > sec) sec = dp[u]; } dp[x] = sec + 1; } int main(){ int k; cin >> n >> k; a = vvi(n); F(i, n - 1){ int x, y; cin >> x >> y; x--; y--; a[x].pb(y); a[y].pb(x); } dp = vi(n, 1); dfs(0, -1); if(dp[0] <= k) cout << "DA"; else cout << "NE"; }
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