Submission #1058135

#	Time	Username	Problem	Language	Result	Execution time	Memory
1058135		Zbyszek99	Circle Passing (EGOI24_circlepassing)	C++17	100 / 100	207 ms	47524 KiB

Main

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define ff first
#define ss second
#define pii pair<int,int>
#define pll pair<long long, long long>
#define pb push_back
#define rep(i, b) for(int i = 0; i < (b); ++i)
#define rep2(i,a,b) for(int i = a; i <= (b); ++i)
#define rep3(i,a,b,c) for(int i = a; i <= (b); i+=c)
#define count_bits(x) __builtin_popcountll((x))
#define all(x) (x).begin(),(x).end()
#define size(x) (int)(x).size()
#define forall(it,x) for(auto& it:(x))
using namespace std;
//mt19937 mt;void random(){mt.seed(chrono::time_point_cast<chrono::milliseconds>(chrono::high_resolution_clock::now()).time_since_epoch().count());}
//ll rand(ll a, ll b) {return a + (mt() % (b-a+1));}
const int INF = 1e9+50;
const ll INF_L = 1e18+40;
const ll MOD = 1e9+7;

int n,m,q;
    
int dist(int a,int b)
{
    return min(abs(a-b),2*n-abs(a-b));
}

void solve()
{
    cin >> n >> m >> q;
    set<int> good;
    rep(i,m)
    {
        int a;
        cin >> a;
        good.insert(a);
        good.insert(a+n);
    }
    rep(i,q)
    {
        int a,b;
        cin >> a >> b;
        if(a > b) swap(a,b);
        int l = -1;
        int r = -1;
        auto it1 = good.upper_bound(a);
        if(it1 != good.begin())
        {
            it1--;
            l = (*it1)%(n*2);
        }
        else
        {
            it1 = good.end();
            it1--;
            l = (*it1)%(n*2);    
        }
        it1 = good.lower_bound(a);
        if(it1 != good.end())
        {
            r = (*it1)%(n*2);
        }
        else
        {
            it1 = good.begin();
            r = (*it1)%(n*2);    
        }
        int m1 = dist(a,b);
        int m2 = dist(a,l) + dist((l+n) % (n*2),b)+1;
        int m3 = dist(a,r) + dist((r+n) % (n*2),b)+1;
       // cout << m1 << " " << m2 << " " << m3 << " " << l << " " << r << " m\n";
        cout << min(min(m1,m2),m3) << "\n";
    }
}

int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    //random();
    int t = 1;
 //   cin >> t;
    while(t--) solve();
}

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