Submission #1086791

#	Time	Username	Problem	Language	Result	Execution time	Memory
1086791		AbdullahIshfaq	Pilot (NOI19_pilot)	C++14	89 / 100	1041 ms	49164 KiB

pilot

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define MOD 1000000007
ll tests = 1 , curr = 0;
const int N = 1000001;
int parent[N],Size[N];
int get_parent(int u){
    return ((u != parent[u]) ? parent[u] = get_parent(parent[u]) : u);
}
void union__(int u,int v){
    if((u = get_parent(u)) == (v = get_parent(v))){
        return ;
    }
    if (Size[u] < Size[v]){
        swap(u , v);
    }
    curr += Size[u] * 1ll * Size[v];
    parent[v] = u;
    Size[u] += Size[v];
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n , q , z;
    cin >> n >> q;
    vector<pair<int,int>> tot;
    for(int i = 1 ;i <= n ;i++){
        cin >> z;
        tot.push_back({z , -i});
    }
    for(int i = 1 ;i <= q ;i++){
        cin >> z;
        tot.push_back({z , i});
    }
    sort(tot.begin(),tot.end());
    ll ans[q];
    for(int i = 0 ;i < n + q ;i ++){
        ll a = tot[i].first , b = tot[i].second;
        if(b > 0){
            ans[b] = curr;
        }
        else{
            b = -b;
            curr++;
            parent[b] = b;
            Size[b] = 1;
            if(parent[b + 1]){
                union__(b , b + 1);
            }
            if(parent[b - 1]){
                union__(b , b - 1);
            }
        }
    }
    for(int i = 1; i<= q; i++){
        cout << ans[i] << endl;
    }
}

Compilation message (stderr)

pilot.cpp: In function 'int main()':
pilot.cpp:40:12: warning: unused variable 'a' [-Wunused-variable]
   40 |         ll a = tot[i].first , b = tot[i].second;
      |            ^

• Subtask 1: 3 / 3
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 5 / 5
• Subtask 6: 9 / 9
• Subtask 7: 14 / 14
• Subtask 8: 10 / 10
• Subtask 9: 11 / 11
• Subtask 10: 0 / 11