Submission #1120561

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120561		vjudge1	Event Hopping (BOI22_events)	C++17	0 / 100	191 ms	3628 KiB

events

#include <bits/stdc++.h>

#define ll long long
#define all(x) x.begin(), x.end()
#define in insert
#define F first
#define S second
#define ppf pop_front
#define pb push_back
#define ppb pop_back
#define pf push_front
#define pii pair <int, int>
#define pll pair <ll, ll>
#define boost() ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define sz(x) (int)x.size()

using namespace std;

const int N = 1e3+123;
const ll mod = 1e9+7;

// vector<int> g[N];
// int used[N];
// void dfs(int v , int p){
//     for(int to : g[v]){
//         if(to != p){
//             dfs(to);
//         }
//     }
// }
void solve() {
    int n,q;
    cin >> n >> q;
    pii a[n+1];
    //pii qr[q+1];
    for(int i=1 ; i <= n ; i++){
        int x;
        cin >> x >> a[i].F;
        a[i].S=i;
    }
    sort(a+1 , a+1+n);
    for(int i=1 ; i <= q ; i++){
        int x,y;
        cin >> x >> y;
        
        //cin >> qr[i].F >> qr[i].S;
        
        if(x != a[1].S || y != a[n].S){
            cout << "impossible\n";
        } else{
            cout << n-1 << endl;
        }
    }


}

signed main() {
    boost();
    int tt=1;
    //cin >> tt;
    while (tt--) {
        solve();
    }
    return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30