oj.uz

답안 #996292

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
996292 2024-06-10T11:46:15 Z hotboy2703 Road Construction (JOI21_road_construction) C++14
100 / 100
 4377 ms 17232 KB 
#include<bits/stdc++.h>
using ll = long long;
using namespace std;
#define pll pair <ll,ll>
#define fi first
#define se second
#define MP make_pair
#define sz(a) (ll((a).size()))
#define BIT(mask,i) (((mask) >> (i))&1)
#define MASK(i) (1LL << (i))
const ll MAXN = 2.5e5+100;
ll n,k;
pll a[MAXN];
ll BIT[MAXN];
void update(ll i,ll v){
//    cout<<"UPD "<<i<<' '<<v<<endl;
    for (;i <= n;i += i &-i)BIT[i]+=v;
}
ll get(ll i){
//    cout<<"GET "<<i<<endl;
    ll res = 0;
    for (;i > 0;i -= i &-i)res += BIT[i];
    return res;
}
ll query(ll l,ll r){
    return get(r) - get(l-1);
}
vector <ll> val;
ll solve(ll x){
    ll res = 0;
    ll ptr = 1;
    for (ll i = 1;i <= n;i ++){
//        cout<<i<<endl;
        while (a[ptr].fi + x < a[i].fi){
            update(lower_bound(val.begin(),val.end(),a[ptr].se) - val.begin() + 1,-1);
            ptr++;
        }
        res += query(lower_bound(val.begin(),val.end(),a[i].se - x) - val.begin()+1,upper_bound(val.begin(),val.end(),a[i].se + x)-val.begin());
        update(lower_bound(val.begin(),val.end(),a[i].se) - val.begin() + 1,+1);
    }
    for (;ptr <= n;ptr ++){
        update(lower_bound(val.begin(),val.end(),a[ptr].se) - val.begin() + 1,-1);
    }
    return res;
}
ll dist(ll x,ll y){
    return max(abs(a[x].fi-a[y].fi),abs(a[x].se-a[y].se));
}
void trace(ll x){
    vector <ll> ans;
    multiset <pll> s;
    for (ll i = 1,ptr = 1;i <= n;i ++){
        while (a[ptr].fi + x < a[i].fi){
            s.erase(MP(a[ptr].se,ptr));
            ptr++;
        }
        for (auto it = s.lower_bound(MP(a[i].se-x,0));it != s.end() && (*it).fi <= a[i].se + x;it++){
//            cout<<(*it).se<<' '<<i<<endl;
            ans.push_back(dist((*it).se,i));
        }
        s.insert(MP(a[i].se,i));
    }
    while (sz(ans) < k)ans.push_back(x+1);
    sort(ans.begin(),ans.end());
    for (auto x:ans)cout<<x<<'\n';
    cout<<'\n';
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(nullptr);
    cin>>n>>k;
    for (ll i = 1;i <= n;i ++){
        ll x,y;
        cin>>x>>y;
        a[i] = MP(x+y,x-y);
        val.push_back(a[i].se);
    }
    sort(val.begin(),val.end());
    val.resize(unique(val.begin(),val.end())-val.begin());
    sort(a+1,a+1+n);
//    for (ll i= 1 ;i <= n;i ++)cout<<a[i].fi<<' '<<a[i].se<<'\n';
//    cout<<"SOLVE(2) "<<solve(2)<<endl;
    ll l = 1;
    ll r = 5e9;
    ll ans = 0;
    while (l <= r){
        ll mid = (l + r) >> 1;
//        cout<<l<<' '<<r<<' '<<mid<<endl;
        if (solve(mid) < k){
            ans = mid;
            l = mid + 1;
        }
        else{
            r = mid - 1;
        }
    }
//    cout<<"ANS "<<ans<<endl;
    trace(ans);
    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 51 ms 7012 KB Output is correct
2 Correct 46 ms 7116 KB Output is correct
3 Correct 32 ms 7128 KB Output is correct
4 Correct 39 ms 7116 KB Output is correct
5 Correct 42 ms 6096 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct

Subtask #2
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1694 ms 14384 KB Output is correct
2 Correct 1724 ms 14408 KB Output is correct
3 Correct 36 ms 7120 KB Output is correct
4 Correct 1744 ms 14316 KB Output is correct
5 Correct 1714 ms 14548 KB Output is correct
6 Correct 1763 ms 14648 KB Output is correct
7 Correct 1560 ms 14376 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4034 ms 13240 KB Output is correct
2 Correct 4046 ms 13252 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1663 ms 11204 KB Output is correct
5 Correct 1212 ms 13512 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4034 ms 13240 KB Output is correct
2 Correct 4046 ms 13252 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1663 ms 11204 KB Output is correct
5 Correct 1212 ms 13512 KB Output is correct
6 Correct 4179 ms 13280 KB Output is correct
7 Correct 3880 ms 13280 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 3981 ms 13456 KB Output is correct
11 Correct 1573 ms 11208 KB Output is correct
12 Correct 1184 ms 13512 KB Output is correct

Subtask #5
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 51 ms 7012 KB Output is correct
2 Correct 46 ms 7116 KB Output is correct
3 Correct 32 ms 7128 KB Output is correct
4 Correct 39 ms 7116 KB Output is correct
5 Correct 42 ms 6096 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 1630 ms 11624 KB Output is correct
8 Correct 1509 ms 11668 KB Output is correct
9 Correct 34 ms 7112 KB Output is correct
10 Correct 1346 ms 10844 KB Output is correct
11 Correct 1240 ms 10592 KB Output is correct
12 Correct 230 ms 11484 KB Output is correct
13 Correct 395 ms 10100 KB Output is correct

Subtask #6
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 51 ms 7012 KB Output is correct
2 Correct 46 ms 7116 KB Output is correct
3 Correct 32 ms 7128 KB Output is correct
4 Correct 39 ms 7116 KB Output is correct
5 Correct 42 ms 6096 KB Output is correct
6 Correct 2 ms 2392 KB Output is correct
7 Correct 1694 ms 14384 KB Output is correct
8 Correct 1724 ms 14408 KB Output is correct
9 Correct 36 ms 7120 KB Output is correct
10 Correct 1744 ms 14316 KB Output is correct
11 Correct 1714 ms 14548 KB Output is correct
12 Correct 1763 ms 14648 KB Output is correct
13 Correct 1560 ms 14376 KB Output is correct
14 Correct 4034 ms 13240 KB Output is correct
15 Correct 4046 ms 13252 KB Output is correct
16 Correct 1 ms 2392 KB Output is correct
17 Correct 1663 ms 11204 KB Output is correct
18 Correct 1212 ms 13512 KB Output is correct
19 Correct 4179 ms 13280 KB Output is correct
20 Correct 3880 ms 13280 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 0 ms 2396 KB Output is correct
23 Correct 3981 ms 13456 KB Output is correct
24 Correct 1573 ms 11208 KB Output is correct
25 Correct 1184 ms 13512 KB Output is correct
26 Correct 1630 ms 11624 KB Output is correct
27 Correct 1509 ms 11668 KB Output is correct
28 Correct 34 ms 7112 KB Output is correct
29 Correct 1346 ms 10844 KB Output is correct
30 Correct 1240 ms 10592 KB Output is correct
31 Correct 230 ms 11484 KB Output is correct
32 Correct 395 ms 10100 KB Output is correct
33 Correct 4377 ms 17232 KB Output is correct
34 Correct 4366 ms 17228 KB Output is correct
35 Correct 3693 ms 16484 KB Output is correct
36 Correct 670 ms 17220 KB Output is correct
37 Correct 641 ms 17224 KB Output is correct
38 Correct 1264 ms 16408 KB Output is correct