제출 #1241756

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1241756		thelegendary08	Uzastopni (COCI15_uzastopni)	C++17	160 / 160	93 ms	29256 KiB

uzastopni

#include<bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define int long long
#define vi vector<int>
#define vvi vector<vector<int>>
#define pii pair<int, int>
#define vpii vector<pair<int, int>>
#define vc vector<char>
#define vb vector<bool>
#define mii map<int,int>
#define f0r(i,n) for(int i=0;i<n;i++)
#define FOR(i,k,n) for(int i=k;i<n;i++)
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define in(a) int a; cin>>a
#define in2(a,b) int a,b; cin>>a>>b
#define in3(a,b,c) int a,b,c; cin>>a>>b>>c
#define in4(a,b,c,d) int a,b,c,d; cin>>a>>b>>c>>d
#define vin(v,n); vi v(n); f0r(i,n){cin>>v[i];}
#define out(a) cout<<a<<'\n'
#define out2(a,b) cout<<a<<' '<<b<<'\n'
#define out3(a,b,c) cout<<a<<' '<<b<<' '<<c<<'\n'
#define out4(a,b,c,d) cout<<a<<' '<<b<<' '<<c<<' '<<d<<'\n'
#define pout(a) cout<<a.first<<' '<<a.second<<'\n'
#define vout(v) for(auto u : v){cout<<u<<' ';} cout<<endl
#define dout(a) cout<<a<<' '<<#a<<endl
#define dout2(a,b) cout<<a<<' '<<#a<<' '<<b<<' '<<#b<<endl
#define yn(x); if(x){cout<<"YES"<<'\n';}else{cout<<"NO"<<'\n';}
const int leg = 1e9 + 7;
const int mod = 998244353;
using namespace std;
const int mxn = 1e4 + 5;
vvi adj(mxn);
// const int mxr = 4955; 
const int mxk = 101;
bitset<mxk>tmp[mxn][mxk]; int N;
vi typ(mxn);
vector<set<int>> q(mxk);
vpii invls[mxn];
void dfs(int node){
	int col = typ[node];
	// dout(col);
	for(auto u : adj[node]){
		dfs(u);
	}
	f0r(i,mxk){
		q[i].clear();
	}
	for(auto u : adj[node]){
		for(auto x : invls[u]){
			q[x.first].insert(x.second);
		}
	}
	for(int l = mxk-1; l >= 0; l--){
		if(l == col){
			tmp[node][col] |= tmp[node][col+1];
			tmp[node][col].set(col);
		}
		for(auto r : q[l]){
			if((l > col || r < col)){
				tmp[node][l] |= tmp[node][r + 1];
				tmp[node][l].set(r);
			}
		}
		for(int r = mxk - 1; r >= l; r--){
			if(tmp[node][l].test(r) && l <= col && r >= col)invls[node].pb(mp(l, r));
		}
	}
}

signed main(){
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	//ifstream cin(".in");
	//ofstream cout(".out");
	in(n); N = n;
	f0r(i,n){
		cin>>typ[i]; typ[i]--;
	}
	f0r(i, n-1){
		in2(a, b); a--; b--;
		adj[a].pb(b);
	}
	dfs(0);
	out(invls[0].size());
}

• Subtask 1: 160 / 160