Submission #1177948

#	Time	Username	Problem	Language	Result	Execution time	Memory
1177948		steveonalex	New Home (APIO18_new_home)	C++20	47 / 100	5099 ms	329732 KiB

new_home

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;

#define MASK(i) (1ULL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()

ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll gcd(ll a, ll b){return __gcd(abs(a), abs(b));}
ll lcm(ll a, ll b){return abs(a) / gcd(a, b) * abs(b);}

ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ull mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}

// mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
mt19937_64 rng(1);
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
// double rngesus_d(double l, double r){
//     double cur = rngesus(0, MASK(60) - 1);
//     cur /= MASK(60) - 1;
//     return l + cur * (r - l);
// }

template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }

template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }

template <class T>
    void printArr(T container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }

template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }


const int N = 3e5 + 69, INF = 1e9 + 69;
vector<int> X, T;
vector<pair<int,int>> coin_slot[N];
vector<int> enter_home[N], exit_home[N];
int ans[N];

multiset<int> S[N];

map<pair<int, int>, vector<int>> mp1, mp2;
vector<array<int, 4>> rect1, rect2;

void call_add(int t, int l, int r, int lean){
    if (lean == 0) mp1[make_pair(l, r)].push_back(t);
    else mp2[make_pair(l, r)].push_back(t);
}

void call_del(int t, int l, int r, int lean){
    if (lean == 0){
        int _t = mp1[make_pair(l, r)].back(); mp1[make_pair(l, r)].pop_back();
        array<int, 4> cur_rect = {{l, r, _t, t-1}};
        rect1.push_back(cur_rect);
    }
    else{
        int _t = mp2[make_pair(l, r)].back(); mp2[make_pair(l, r)].pop_back();
        array<int, 4> cur_rect = {{l, r, _t, t-1}};
        rect2.push_back(cur_rect);
    }
}

void add(int type, int pos, int t){
    if (S[type].find(pos) != S[type].end()) {
        S[type].insert(pos);
        return;
    }
    int l = -1, r = -1;
    auto it = S[type].lower_bound(pos);
    if (it != S[type].end()){
        r = *it;
    }
    if (it != S[type].begin()){
        it--;
        l = *it;
    }

    if (l != -1 || r != -1) {
        if (l == -1){
            call_del(t, 1, r, 1);
        }
        else if (r == -1){
            call_del(t, l, INF, 0);
        }
        else{
            int mid = (l + r) >> 1;
            call_del(t, l, mid, 0);
            call_del(t, mid+1, r, 1);
        }
    }

    if (l == -1){
        call_add(t, 1, pos, 1);
    }
    else{
        int mid = (l + pos) >> 1;
        call_add(t, l, mid, 0);
        call_add(t, mid+1, pos, 1);
    }

    if (r == -1){
        call_add(t, pos, INF, 0);
    }
    else{
        int mid = (pos + r) >> 1;
        call_add(t, pos, mid, 0);
        call_add(t, mid+1, r, 1);
    }



    S[type].insert(pos);
}

void del(int type, int pos, int t){
    S[type].erase(S[type].find(pos));
    if (S[type].find(pos) != S[type].end()) {
        return;
    }

    int l = -1, r = -1;
    auto it = S[type].lower_bound(pos);
    if (it != S[type].end()){
        r = *it;
    }
    if (it != S[type].begin()){
        it--;
        l = *it;
    }

    if (l != -1 || r != -1) { 
        if (l == -1){
            call_add(t, 1, r, 1);
        }
        else if (r == -1){
            call_add(t, l, INF, 0);
        }
        else{
            int mid = (l + r) >> 1;
            call_add(t, l, mid, 0);
            call_add(t, mid+1, r, 1);
        }
    }
    if (l == -1){
        call_del(t, 1, pos, 1);
    }
    else{
        int mid = (l + pos) >> 1;
        call_del(t, l, mid, 0);
        call_del(t, mid+1, pos, 1);
    }

    if (r == -1){
        call_del(t, pos, INF, 0);
    }
    else{
        int mid = (pos + r) >> 1;
        call_del(t, pos, mid, 0);
        call_del(t, mid+1, r, 1);
    }
}

vector<pair<int, int>> st[N * 4];
void update(int u, int v, pair<int, int> val, int l, int r, int id){
    if (u <= l && r <= v){
        st[id].push_back(val);
        return;
    }
    int mid = (l + r) >> 1;
    if (u <= mid) update(u, v, val, l, mid, id * 2);
    if (v > mid) update(u, v, val, mid + 1, r, id * 2 + 1);
}

void answer_question1(const vector<pair<int,int>> &arr, const vector<pair<int, int>> &ranges){
    int j = 0;
    for(pair<int, int> i: ranges){
        while(j < (int) arr.size() && arr[j].first < i.first) 
            j++;
        while(j < (int) arr.size() && arr[j].first <= i.second){
            maximize(ans[arr[j].second], abs(i.first - arr[j].first));
            j++;
        }
    }
}

vector<pair<int,int>> dfs(int l, int r, int id){
    if (l == r){
        vector<pair<int,int>> arr;
        for(auto i: coin_slot[l]) if (ans[i.second] != -1) arr.push_back(i);

        answer_question1(arr, st[id]);
        return arr;
    }
    int mid = (l + r) >> 1;
    vector<pair<int, int>> left = dfs(l, mid, id * 2), right = dfs(mid+1, r, id * 2 + 1);
    vector<pair<int,int>> arr(left.size() + right.size());
    merge(ALL(left), ALL(right), arr.begin());
    answer_question1(arr, st[id]);

    return arr;
}

void solve(){
    int n, k, q; cin >> n >> k >> q;

    vector<array<int, 4>> homes(n);
    for(int i= 0; i < n; ++i) {
        for(int j = 0; j < 4; ++j) cin >> homes[i][j];
    }

    vector<pair<int,int>> queries(q);
    for(int i = 0; i < q; ++i) cin >> queries[i].first >> queries[i].second;

    X.push_back(0); T.push_back(0);

    for(auto i: queries){
        T.push_back(i.second);
    }
    remove_dup(T);

    for(int i = 0; i < q; ++i){
        int t = lower_bound(ALL(T), queries[i].second) - T.begin();
        coin_slot[t].push_back(make_pair(queries[i].first, i));
    }
    for(int i = 0; i < n; ++i){
        int l = lower_bound(ALL(T), homes[i][2]) - T.begin();
        int r = upper_bound(ALL(T), homes[i][3]) - T.begin() - 1;
        if (l > r) continue;
        enter_home[l].push_back(i);
        exit_home[r].push_back(i);
    }

    int cnt = 0;
    for(int it = 1; it < (int)T.size(); ++it){
        for(int i: enter_home[it]){
            int pos = homes[i][0], type = homes[i][1];
            if (S[type].empty()) cnt++;

            add(type, pos, it);
        }

        for(pair<int,int> i: coin_slot[it]){
            if (cnt < k) ans[i.second] = -1;
        }

        for(int i: exit_home[it]){
            int pos = homes[i][0], type = homes[i][1];
            del(type, pos, it + 1);
            if (S[type].empty()) cnt--;
        }
    }

    for(auto pp: mp1){
        pair<int, int> wow = pp.first;
        for(int j: pp.second){
            array<int, 4> cur_rect = {{wow.first, wow.second, j, T.size() - 1}};
            rect1.push_back(cur_rect);
        }
    }
    for(auto pp: mp2){
        pair<int, int> wow = pp.first;
        for(int j: pp.second){
            array<int, 4> cur_rect = {{wow.first, wow.second, j, T.size() - 1}};
            rect2.push_back(cur_rect);
        }
    }

    for(int i = 1; i < (int)T.size(); ++i) sort(ALL(coin_slot[i]));

    sort(ALL(rect1));
    for(int i = 1; i <= (int)T.size() * 4; ++i) st[i].clear();
    for(auto i: rect1) if (i[2] <= i[3]){
        update(i[2], i[3], make_pair(i[0], i[1]), 1, T.size() - 1, 1);
    }

    vector<pair<int, int>> lmao = dfs(1, T.size() - 1, 1);

    for(int i = 1; i < (int) T.size(); ++i){
        for(pair<int, int> &j: coin_slot[i]) j.first = -j.first;
        sort(ALL(coin_slot[i]));
    }
    for(auto &i: rect2){
        swap(i[0], i[1]);
        i[0] = -i[0]; i[1] = -i[1];
    }
    sort(ALL(rect2));
    for(int i = 1; i <= (int)T.size() * 4; ++i) st[i].clear();
    for(auto i: rect2) if (i[2] <= i[3]){
        update(i[2], i[3], make_pair(i[0], i[1]), 1, T.size() - 1, 1);
    }

    lmao = dfs(1, T.size() - 1, 1);



    for(int i = 0; i < q; ++i) cout << ans[i] << "\n";
}

int main(void){
    ios::sync_with_stdio(0);cin.tie(0); cout.tie(0);

    clock_t start = clock();

    solve();

    cerr << "Time elapsed: " << clock() - start << "ms!\n";
    return 0;
}

Compilation message (stderr)

new_home.cpp: In function 'void solve()':
new_home.cpp:278:75: warning: narrowing conversion of '(T.std::vector<int>::size() - 1)' from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing]
  278 |             array<int, 4> cur_rect = {{wow.first, wow.second, j, T.size() - 1}};
      |                                                                  ~~~~~~~~~^~~
new_home.cpp:285:75: warning: narrowing conversion of '(T.std::vector<int>::size() - 1)' from 'std::vector<int>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing]
  285 |             array<int, 4> cur_rect = {{wow.first, wow.second, j, T.size() - 1}};
      |                                                                  ~~~~~~~~~^~~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 0 / 10
• Subtask 4: 0 / 23
• Subtask 5: 35 / 35
• Subtask 6: 0 / 20