Submission #1095034


Source Code Expand

#include <bits/stdc++.h>

using namespace std;
#define FOR(i,n) for(int i = 0; i < (n); i++)
#define sz(c) ((int)c.size())
#define ten(n) ((int)1e##n)
using ll = long long;
using Pii = pair<int, int>;
using Pll = pair<ll, ll>;

template<typename ...> static inline int getchar_unlocked(void) { return getchar(); }
template<typename ...> static inline void putchar_unlocked(int c) { putchar(c); }
#define mygc(c) (c)=getchar_unlocked()
#define mypc(c) putchar_unlocked(c)
void reader(int& x) { int k, m = 0; x = 0; for (;;) { mygc(k); if (k == '-') { m = 1; break; }if ('0' <= k&&k <= '9') { x = k - '0'; break; } }for (;;) { mygc(k); if (k<'0' || k>'9')break; x = x * 10 + k - '0'; }if (m) x = -x; }
void reader(ll& x) { int k, m = 0; x = 0; for (;;) { mygc(k); if (k == '-') { m = 1; break; }if ('0' <= k&&k <= '9') { x = k - '0'; break; } }for (;;) { mygc(k); if (k<'0' || k>'9')break; x = x * 10 + k - '0'; }if (m) x = -x; }
int reader(char c[]) { int i, s = 0; for (;;) { mygc(i); if (i != ' '&&i != '\n'&&i != '\r'&&i != '\t'&&i != EOF) break; }c[s++] = i; for (;;) { mygc(i); if (i == ' ' || i == '\n' || i == '\r' || i == '\t' || i == EOF) break; c[s++] = i; }c[s] = '\0'; return s; }
int reader(string& c) { int i; for (;;) { mygc(i); if (i != ' '&&i != '\n'&&i != '\r'&&i != '\t'&&i != EOF) break; }c.push_back(i); for (;;) { mygc(i); if (i == ' ' || i == '\n' || i == '\r' || i == '\t' || i == EOF) break; c.push_back(i); }; return sz(c); }
template <class T, class S> void reader(T& x, S& y) { reader(x); reader(y); }
template <class T, class S, class U> void reader(T& x, S& y, U& z) { reader(x); reader(y); reader(z); }
template <class T, class S, class U, class V> void reader(T& x, S& y, U& z, V & w) { reader(x); reader(y); reader(z); reader(w); }
void writer(int x, char c) { int s = 0, m = 0; char f[10]; if (x<0)m = 1, x = -x; while (x)f[s++] = x % 10, x /= 10; if (!s)f[s++] = 0; if (m)mypc('-'); while (s--)mypc(f[s] + '0'); mypc(c); }
void writer(ll x, char c) { int s = 0, m = 0; char f[20]; if (x<0)m = 1, x = -x; while (x)f[s++] = x % 10, x /= 10; if (!s)f[s++] = 0; if (m)mypc('-'); while (s--)mypc(f[s] + '0'); mypc(c); }
void writer(const char c[]) { int i; for (i = 0; c[i] != '\0'; i++)mypc(c[i]); }
void writer(const char x[], char c) { int i; for (i = 0; x[i] != '\0'; i++)mypc(x[i]); mypc(c); }
template<class T> void writerLn(T x) { writer(x, '\n'); }
template<class T, class S> void writerLn(T x, S y) { writer(x, ' '); writer(y, '\n'); }
template<class T, class S, class U> void writerLn(T x, S y, U z) { writer(x, ' '); writer(y, ' '); writer(z, '\n'); }
template<class T> void writerArr(T x[], int n) { if (!n) { mypc('\n'); return; }FOR(i, n - 1)writer(x[i], ' '); writer(x[n - 1], '\n'); }
template<class T> void writerArr(vector<T>& x) { writerArr(x.data(), (int)x.size()); }

template<class T> T gcd(T a, T b) { return b ? gcd(b, a % b) : a; }
template<class T> T lcm(T a, T b) { return a / gcd(a, b) * b; }
ll mod_pow(ll a, ll n, ll mod) {
	ll ret = 1;
	ll p = a % mod;
	while (n) {
		if (n & 1) ret = ret * p % mod;
		p = p * p % mod;
		n >>= 1;
	}
	return ret;
}
template<class T> T extgcd(T a, T b, T& x, T& y) { for (T u = y = 1, v = x = 0; a;) { T q = b / a; swap(x -= q * u, u); swap(y -= q * v, v); swap(b -= q * a, a); } return b; }
template<class T> T mod_inv(T a, T m) { T x, y; extgcd(a, m, x, y); return (m + x % m) % m; }

int n;
int a[3000];
vector<Pii> e[3000];

bool memo[3000];
bool dfs(int v, int par) {
	for (auto to : e[v]) {
		if (to.second > 0) {
			bool x = dfs(to.first, v);
			if (!x) return true;
		}
	}
	return false;
}

int main() {
	reader(n);
	FOR(i, n) reader(a[i]);
	FOR(i, n - 1) {
		int x, y; reader(x, y);
		x--; y--;
		int xtoy = 0;
		if (a[x] > a[y]) xtoy = 1;
		else if (a[x] < a[y]) xtoy = -1;
		e[x].emplace_back(y, xtoy);
		e[y].emplace_back(x, -xtoy);
	}

	vector<int> ans;
	FOR(i, n) {
		bool b = dfs(i, -1);
		if (b) ans.push_back(i + 1);
	}
	writerArr(ans);
	return 0;
}

Submission Info

Submission Time
Task F - Tree Game
User math
Language C++14 (GCC 5.4.1)
Score 1600
Code Size 4039 Byte
Status AC
Exec Time 3 ms
Memory 512 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 1600 / 1600
Status
AC × 3
AC × 53
Set Name Test Cases
Sample sample1.txt, sample2.txt, sample3.txt
All sample1.txt, sample2.txt, sample3.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in29.txt, in3.txt, in30.txt, in31.txt, in32.txt, in33.txt, in34.txt, in35.txt, in36.txt, in37.txt, in38.txt, in39.txt, in4.txt, in40.txt, in41.txt, in42.txt, in43.txt, in44.txt, in45.txt, in46.txt, in47.txt, in48.txt, in49.txt, in5.txt, in50.txt, in6.txt, in7.txt, in8.txt, in9.txt
Case Name Status Exec Time Memory
in1.txt AC 3 ms 512 KB
in10.txt AC 3 ms 512 KB
in11.txt AC 3 ms 512 KB
in12.txt AC 3 ms 384 KB
in13.txt AC 3 ms 384 KB
in14.txt AC 3 ms 512 KB
in15.txt AC 3 ms 512 KB
in16.txt AC 3 ms 512 KB
in17.txt AC 3 ms 512 KB
in18.txt AC 3 ms 512 KB
in19.txt AC 3 ms 512 KB
in2.txt AC 3 ms 512 KB
in20.txt AC 3 ms 512 KB
in21.txt AC 3 ms 384 KB
in22.txt AC 3 ms 384 KB
in23.txt AC 3 ms 384 KB
in24.txt AC 3 ms 384 KB
in25.txt AC 3 ms 384 KB
in26.txt AC 3 ms 384 KB
in27.txt AC 3 ms 384 KB
in28.txt AC 3 ms 384 KB
in29.txt AC 3 ms 384 KB
in3.txt AC 3 ms 512 KB
in30.txt AC 3 ms 384 KB
in31.txt AC 3 ms 512 KB
in32.txt AC 3 ms 512 KB
in33.txt AC 3 ms 384 KB
in34.txt AC 3 ms 512 KB
in35.txt AC 3 ms 512 KB
in36.txt AC 3 ms 256 KB
in37.txt AC 3 ms 256 KB
in38.txt AC 3 ms 256 KB
in39.txt AC 3 ms 256 KB
in4.txt AC 3 ms 512 KB
in40.txt AC 3 ms 512 KB
in41.txt AC 3 ms 512 KB
in42.txt AC 3 ms 384 KB
in43.txt AC 3 ms 512 KB
in44.txt AC 3 ms 512 KB
in45.txt AC 3 ms 384 KB
in46.txt AC 3 ms 384 KB
in47.txt AC 3 ms 512 KB
in48.txt AC 3 ms 512 KB
in49.txt AC 3 ms 512 KB
in5.txt AC 3 ms 384 KB
in50.txt AC 3 ms 512 KB
in6.txt AC 3 ms 512 KB
in7.txt AC 3 ms 512 KB
in8.txt AC 3 ms 512 KB
in9.txt AC 3 ms 512 KB
sample1.txt AC 3 ms 256 KB
sample2.txt AC 3 ms 256 KB
sample3.txt AC 3 ms 256 KB