Submission #1221212

#	Time	Username	Problem	Language	Result	Execution time	Memory
1221212		Rifal	Circle Passing (EGOI24_circlepassing)	C++20	31 / 100	63 ms	12448 KiB

Main

#include <bits/stdc++.h>
#include <fstream>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define endl '\n'
#define pb push_back
#define INF 2000000000
#define fi first
#define se second
//#define cin fin
//#define cout fout
using namespace std;
//double const EPS = 1e-14;
typedef long long ll;
//const ll P = 10007;
//const ll mod = 1e9 + 7;
//using namespace __gnu_pbds;
//typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set; // find_by_order, order_of_key
const int Max = 5e5 + 5;
ll n, m, q;
vector<ll> vv;
ll fr[Max];
ll fin(ll x, ll y) {
    ll sum = min(abs(x-y),(n*2ll)-abs(x-y));
    return sum;
}
ll sol(ll id, ll x, ll y) {
    ll a = vv[id], b = (vv[id]+n)%(2*n);
    ll dis1 = fin(x,a)+fin(y,b)+1;
    ll dis2 = fin(x,b)+fin(y,a)+1;
    ll best = INF;
    best = min(best,min(dis1,dis2));
    return best;
}
int main()
{
    ios_base::sync_with_stdio(0); cout.tie(0); cin.tie(0);
    cin >> n >> m >> q;
    for(int i = 0; i < m; i++) {cin >> fr[i]; vv.push_back(fr[i]); vv.push_back(fr[i]+n);}
    sort(vv.begin(),vv.end());
    ll siz = m*2ll;
    while(q--) {
        ll x, y; cin >> x >> y;
        ll ans = fin(x,y);
        ll id2, id1 = lower_bound(vv.begin(),vv.end(),x)-vv.begin();
        if(id1 == 0) id2 = siz-1;
        else id2 = id1-1;
        ans = min(ans,sol(id2,x,y));
        if(id1 == m) id1 = 0;

        //cout << id1 << ' ' << id2 << ' ' << id3 << 'a' << endl;
        ans = min(ans,sol(id1,x,y));
        cout << ans << endl;
    }
    return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 0 / 20
• Subtask 3: 0 / 22
• Subtask 4: 17 / 17
• Subtask 5: 0 / 27