oj.uz

Submission #964710

# Submission time Handle Problem Language Result Execution time Memory
964710 2024-04-17T11:41:44 Z pcc Uzastopni (COCI15_uzastopni) C++17
120 / 160
 28 ms 6124 KB 
#include <bits/stdc++.h>
using namespace std;

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,popcnt,sse4")
#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>

const int mxn = 1e4+10;

int N;
int arr[mxn];
vector<int> tree[mxn];
vector<int> lp[mxn],rp[mxn];
vector<int> lop[110],rop[110];
bitset<mxn> dl,dr;

void dfs(int now){
	for(auto &i:lop)i.clear();
	for(auto &i:rop)i.clear();
	for(auto nxt:tree[now]){
		dfs(nxt);
	}
	for(auto nxt:tree[now]){
		for(auto &i:lp[nxt]){
			for(auto &j:rp[nxt]){
				if(i>arr[now])rop[i].push_back(j);
				if(j<arr[now]){
					lop[j].push_back(i);
				}
			}
		}
	}
	dl.reset();
	dr.reset();
	dl[arr[now]] = dr[arr[now]] = 1;
	for(int i = arr[now];i+1<110;i++){
		if(dr[i]){
			rp[now].push_back(i);
			for(auto &j:rop[i+1])dr[j] = 1;
		}
	}
	for(int i = arr[now];i>0;i--){
		if(dl[i]){
			lp[now].push_back(i);
			for(auto &j:lop[i-1])dl[j] = 1;
		}
	}
	return;
}

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>N;
	for(int i = 1;i<=N;i++)cin>>arr[i];
	for(int i = 1;i<N;i++){
		int a,b;
		cin>>a>>b;
		tree[a].push_back(b);
	}
	dfs(1);
	/*
	for(int i = 1;i<=N;i++){
		cout<<i<<":"<<endl;
		for(auto &j:lp[i])cout<<j<<',';cout<<endl;
		for(auto &j:rp[i])cout<<j<<',';cout<<endl;
	}

   */
	cout<<(lp[1].size())*(rp[1].size())<<endl;
}

Subtask #1
120.0 / 160.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1172 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Incorrect 1 ms 1116 KB Output isn't correct
5 Correct 1 ms 1268 KB Output is correct
6 Correct 1 ms 1116 KB Output is correct
7 Correct 1 ms 1116 KB Output is correct
8 Correct 1 ms 1116 KB Output is correct
9 Correct 1 ms 1116 KB Output is correct
10 Correct 1 ms 1112 KB Output is correct
11 Correct 7 ms 1884 KB Output is correct
12 Incorrect 7 ms 1884 KB Output isn't correct
13 Correct 7 ms 1884 KB Output is correct
14 Correct 22 ms 5980 KB Output is correct
15 Incorrect 28 ms 6124 KB Output isn't correct
16 Correct 25 ms 6104 KB Output is correct
17 Correct 8 ms 1884 KB Output is correct
18 Correct 7 ms 1884 KB Output is correct
19 Incorrect 6 ms 1884 KB Output isn't correct
20 Incorrect 6 ms 1884 KB Output isn't correct