Submission #1227527

#	Time	Username	Problem	Language	Result	Execution time	Memory
1227527		omarrrr	Construction of Highway (JOI18_construction)	C++20	7 / 100	2093 ms	532 KiB

construction

#include<bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define pb push_back

using namespace std;
const ll N=1e6,mod=1e9 +7;

ll a,b,d,n,m,l,k,q;
ll t[N];

ll p[N];
ll x,y;
ll c;

ll cal(ll y){
    vector<ll>in;
    in.pb(t[y]);
    ll res=0;
    if(y==3){
        x++;
    }
    t[y]=c;

    while(y!=p[y]){
        y=p[y];
        res+=(lower_bound(in.begin(),in.end(),t[y])-in.begin());
        in.pb(t[y]);
        t[y]=c;
        sort(in.begin(),in.end());
    }
    return res;
}

int main(){
    ios_base::sync_with_stdio(0),cin.tie(0);

    ll T=1;
  //  cin>>T;
    while(T--){
        cin>>n;
        for(ll i=0;i<n;i++){
            cin>>t[i];
            p[i]=-1;
        }
        p[0]=0;
        for(ll i=0;i<n-1;i++){
           // ll res=0;
            cin>>x>>y;
            x--;y--;
            p[y]=x;
            c=t[y];
            cout<<cal(x)<<"\n";
        }



    }



    return 0;
}


/*
 4 10
3 6 2 9

 */

• Subtask 1: 7 / 7
• Subtask 2: 0 / 9
• Subtask 3: 0 / 84