Submission #372493

#	Time	Username	Problem	Language	Result	Execution time	Memory
372493		Atill83	Uzastopni (COCI15_uzastopni)	C++14	160 / 160	22 ms	11244 KiB

uzastopni

#include <bits/stdc++.h>
#define ff first
#define ss second
#define endl '\n'
using namespace std;
const long long INF = (long long) 1e18;
const int mod = (int) 1e9+7;
const int MAXN = (int) 3e5+5;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
ll n;
int joke[MAXN];
vector<int> adj[MAXN];
bool vr[MAXN];
pair<vector<int>, vector<int>> dfs(int v){
    vector<pair<int, pair<vector<int>, vector<int>>>> ls, gr;
    vector<bool> can(101, 0);
    for(int j: adj[v]){
        auto c = dfs(j);
        if(joke[j] < joke[v]){
            ls.push_back({joke[j], c});
        }else if(joke[j] > joke[v])
            gr.push_back({joke[j], c});
    }
    sort(ls.begin(), ls.end(), [](auto u, auto v){
        return u.ff > v.ff;
    });
    sort(gr.begin(), gr.end(), [](auto u, auto v){
        return u.ff < v.ff;
    });
    can[joke[v]] = 1;
    for(auto &u: ls){
        bool cn = 0;
        for(auto x: u.ss.ss){
            if(x < joke[v] && can[x + 1]){
                cn = 1;
                break;
            }
        }

        if(cn){
            for(auto x: u.ss.ff){
                can[x] = 1;
            }
        }
    }

    for(auto &u: gr){
        bool cn = 0;
        for(auto x: u.ss.ff){
            if(x > joke[v] && can[x - 1]){
                cn = 1;
                break;
            }
        }

        if(cn){
            for(auto x: u.ss.ss){
                can[x] = 1;
            }
        }
    }


    vector<int> sl, sg;

    for(int i = 1; i <= joke[v]; i++){
        if(can[i])  
            sl.push_back(i);
    }
    
    for(int i = joke[v]; i <= 100; i++){
        if(can[i])  
            sg.push_back(i);
    }

    return make_pair(sl, sg);
}



int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);

    #ifdef Local
        freopen("C:/Users/Admin/Desktop/Yazilim/C/IO/int.txt","r",stdin);
        freopen("C:/Users/Admin/Desktop/Yazilim/C/IO/out.txt","w",stdout);
    #endif

    cin>>n;

    for(int i = 1; i <= n; i++){
        cin>>joke[i];
        
    }
    for(int i = 0; i < n - 1; i++){
        int a, b;
        cin>>a>>b;
        adj[a].push_back(b);
    }


    auto ans = dfs(1);
    cout<<(ans.ff.size()) * (ans.ss.size());


    

    #ifdef Local
        cout<<endl<<fixed<<setprecision(2)<<1000.0 * clock() / CLOCKS_PER_SEC<< " milliseconds ";
    #endif
}

• Subtask 1: 160 / 160