oj.uz

Submission #394054

# Submission time Handle Problem Language Result Execution time Memory
394054 2021-04-25T09:40:46 Z 79brue New Home (APIO18_new_home) C++14
5 / 100
 1864 ms 212268 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int*, int> INFO;

struct Mart{
    int x, y, t; bool on; /// location, type, time
    Mart(int x, int y, int t, bool on): x(x), y(y), t(t), on(on){}
    bool operator<(const Mart &r)const{
        return t<r.t;
    }
};

struct Query{
    int x, t, idx;
    Query(){}
    Query(int x, int t, int idx): x(x), t(t), idx(idx){}
    bool operator<(const Query &r)const{
        return t<r.t;
    }
};

struct Segment{
    int a, b, l, r, s, e;
    Segment(){}
    Segment(int a, int b, int l, int r, int s, int e): a(a), b(b), l(l), r(r), s(s), e(e){}
};
vector<Segment> segment;

struct maxSegmentTree{
    stack<INFO> vec;
    stack<int> sz;
    int tree[6000002], lazy[6000002];

    void init(int i, int l, int r){
        tree[i] = lazy[i] = -1e9;
        if(l==r) return;
        int m = (l+r)>>1;
        init(i*2, l, m), init(i*2+1, m+1, r);
    }

    inline void save(){
        sz.push((int)vec.size());
    }
    void undo(){
        while(vec.size() > sz.top()){
            INFO tmp = vec.top();
            *(tmp.first) = tmp.second;
            vec.pop();
        }
        sz.pop();
    }

    #define saveinfo(A) vec.push(INFO {&A, A})
    void propagate(int i, int l, int r){
        if(tree[i] < lazy[i]){
            saveinfo(tree[i]);
            tree[i] = lazy[i];
        }
        if(l!=r){
            if(lazy[i*2] < lazy[i]){
                saveinfo(lazy[i*2]);
                lazy[i*2] = lazy[i];
            }
            if(lazy[i*2+1] < lazy[i]){
                saveinfo(lazy[i*2+1]);
                lazy[i*2+1] = lazy[i];
            }
        }
    }

    void rangeMax(int i, int l, int r, int s, int e, int val){
        propagate(i, l, r);
        if(r<s || e<l) return;
        if(s<=l && r<=e){
            if(lazy[i] >= val) return;
            saveinfo(lazy[i]);
            lazy[i] = val;
            propagate(i, l, r);
            return;
        }

        int m = (l+r)>>1;
        rangeMax(i*2, l, m, s, e, val);
        rangeMax(i*2+1, m+1, r, s, e, val);
        saveinfo(tree[i]);
        tree[i] = max(tree[i*2], tree[i*2+1]);
    }

    int getVal(int i, int l, int r, int idx){
        propagate(i, l, r);
        if(l==r) return tree[i];
        int m = (l+r)>>1;
        if(idx <= m) return getVal(i*2, l, m, idx);
        return getVal(i*2+1, m+1, r, idx);
    }
} treeA, treeB;

int n, q, k;

void input();
void createQueries();
void renumber();
void ODCinit();
void ODC(int, int, vector<Segment>&);
void output();

int main(){
    input();
    createQueries();
    renumber();
    ODCinit();
    ODC(1, n+q+1, segment);
    output();
}

vector<Mart> vec;
vector<Query> qvec;
int ans[300002];
vector<int> tVec;

void input(){
    scanf("%d %d %d", &n, &k, &q);
    for(int i=1; i<=n; i++){
        int x, t, a, b;
        scanf("%d %d %d %d", &x, &t, &a, &b);
        vec.push_back(Mart(x, t, a, 1));
        vec.push_back(Mart(x, t, b+1, 0));
        tVec.push_back(t);
    }
    sort(vec.begin(), vec.end());

    for(int i=1; i<=q; i++){
        int l, y;
        scanf("%d %d", &l, &y);
        qvec.push_back(Query(l, y, i));
        tVec.push_back(y);
    }
    sort(qvec.begin(), qvec.end());

    sort(tVec.begin(), tVec.end());
    tVec.erase(unique(tVec.begin(), tVec.end()), tVec.end());
    for(auto &p: vec) p.t = lower_bound(tVec.begin(), tVec.end(), p.t) - tVec.begin() + 1;
    for(auto &p: qvec) p.t = lower_bound(tVec.begin(), tVec.end(), p.t) - tVec.begin() + 1;
}

multiset<int> mst[300002];
unordered_multimap<ll, int> mtm;

inline void addSegment(int l, int r, int t){
    mtm.insert(make_pair(100000000LL * l + r, t));
}

void delSegment(int l, int r, int e){
    auto it = mtm.find(100000000LL * l + r);
    int s = it->second;
    mtm.erase(it);
    if(s>=e) return;

    int mid = (l+r)/2;
    segment.push_back(Segment(1, -l, l, mid, s, e-1));
    segment.push_back(Segment(-1, r, mid+1, r, s, e-1));
}

void createQueries(){
    int pnt = 0;
    qvec.push_back(Query(0, 100000001, 0));
    for(int i=1; i<=k; i++){
        mst[i].insert(-300000000), mst[i].insert(400000000);
        addSegment(-300000000, 400000000, 1);
    }
    for(int i=0; i<q+1; i++){
        while(pnt < 2*n && vec[pnt].t <= qvec[i].t){
            Mart tmp = vec[pnt++];
            if(tmp.on){
                auto it = mst[tmp.y].lower_bound(tmp.x);
                int l = (it == mst[tmp.y].begin() ? -1 : *prev(it));
                int r = (it == mst[tmp.y].end() ? -1 : *it);
                mst[tmp.y].insert(tmp.x);

                if(l!=-1 && r!=-1) delSegment(l, r, tmp.t);
                if(l!=-1) addSegment(l, tmp.x, tmp.t);
                if(r!=-1) addSegment(tmp.x, r, tmp.t);
            }
            else{
                mst[tmp.y].erase(mst[tmp.y].find(tmp.x));

                auto it = mst[tmp.y].lower_bound(tmp.x);
                int l = (it == mst[tmp.y].begin() ? -1 : *prev(it));
                int r = (it == mst[tmp.y].end() ? -1 : *it);

                if(l!=-1 && r!=-1) addSegment(l, r, tmp.t);
                if(l!=-1) delSegment(l, tmp.x, tmp.t);
                if(r!=-1) delSegment(tmp.x, r, tmp.t);
            }
        }
    }
    for(int i=1; i<=k; i++){
        delSegment(-300000000, 400000000, n+q+1);
    }
    assert(mtm.empty());
}

vector<int> renumberVec; int z;
void renumber(){
    renumberVec.push_back(-300000000);
    for(auto s: segment){
        renumberVec.push_back(s.l);
        renumberVec.push_back(s.r);
    }
    for(int i=0; i<q; i++) renumberVec.push_back(qvec[i].x);
    sort(renumberVec.begin(), renumberVec.end());
    renumberVec.erase(unique(renumberVec.begin(), renumberVec.end()), renumberVec.end());
    z = renumberVec.size();
    assert(z <= 300000);
}
inline int g(int x){
    return lower_bound(renumberVec.begin(), renumberVec.end(), x) - renumberVec.begin();
}

int pnt = 0;

void ODCinit(){
    treeA.init(1, 0, z-1);
    treeB.init(1, 0, z-1);
}

void ODC(int l, int r, vector<Segment>& vec){
    treeA.save(); treeB.save();
    vector<Segment> lv, rv;
    int m = (l+r)/2;
    for(Segment s: vec){
        if(s.s <= l && r <= s.e){
            if(s.a == 1) treeA.rangeMax(1, 0, z-1, g(s.l), g(s.r), s.b);
            else         treeB.rangeMax(1, 0, z-1, g(s.l), g(s.r), s.b);
        }
        else{
            if(s.s <= m) lv.push_back(s);
            if(m < s.e)  rv.push_back(s);
        }
    }
    vec.clear();
    vec.shrink_to_fit();

    if(l==r){
        while(pnt < q && qvec[pnt].t == l){
            Query query = qvec[pnt++];
//            printf("%d: %d %d\n", pnt, treeA.getVal(1, 0, z-1, g(query.x)), treeB.getVal(1, 0, z-1, g(query.x)));
            ans[query.idx] = max(treeA.getVal(1, 0, z-1, g(query.x)) + query.x,
                                 treeB.getVal(1, 0, z-1, g(query.x)) - query.x);
        }
        treeA.undo(); treeB.undo();
        return;
    }

    if(pnt < q && qvec[pnt].t <= m) ODC(l, m, lv);
    if(pnt < q && qvec[pnt].t <= r) ODC(m+1, r, rv);
    treeA.undo(); treeB.undo();
}

void output(){
    for(int i=1; i<=q; i++){
        printf("%d\n", ans[i] > 100000000 ? -1 : ans[i]);
    }
}

Compilation message

new_home.cpp: In member function 'void maxSegmentTree::undo()':
new_home.cpp:48:26: warning: comparison of integer expressions of different signedness: 'std::stack<std::pair<int*, int> >::size_type' {aka 'long unsigned int'} and '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} [-Wsign-compare]
   48 |         while(vec.size() > sz.top()){
      |               ~~~~~~~~~~~^~~~~~~~~~
new_home.cpp: In function 'void input()':
new_home.cpp:125:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  125 |     scanf("%d %d %d", &n, &k, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:128:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  128 |         scanf("%d %d %d %d", &x, &t, &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:137:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  137 |         scanf("%d %d", &l, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14412 KB Output is correct
2 Correct 11 ms 14412 KB Output is correct
3 Correct 11 ms 14412 KB Output is correct
4 Correct 11 ms 14412 KB Output is correct
5 Correct 12 ms 14628 KB Output is correct
6 Correct 25 ms 14864 KB Output is correct
7 Correct 24 ms 15256 KB Output is correct
8 Correct 26 ms 15348 KB Output is correct
9 Correct 26 ms 15516 KB Output is correct
10 Correct 27 ms 15228 KB Output is correct
11 Correct 22 ms 14860 KB Output is correct
12 Correct 20 ms 14708 KB Output is correct
13 Correct 14 ms 14620 KB Output is correct
14 Correct 14 ms 14788 KB Output is correct
15 Correct 30 ms 15052 KB Output is correct
16 Correct 25 ms 15308 KB Output is correct
17 Correct 25 ms 14964 KB Output is correct
18 Correct 25 ms 15172 KB Output is correct
19 Correct 26 ms 15316 KB Output is correct
20 Correct 24 ms 14968 KB Output is correct
21 Correct 11 ms 14668 KB Output is correct
22 Correct 27 ms 15556 KB Output is correct
23 Correct 26 ms 15308 KB Output is correct
24 Correct 26 ms 15324 KB Output is correct
25 Correct 26 ms 14924 KB Output is correct
26 Correct 19 ms 14796 KB Output is correct
27 Correct 13 ms 14756 KB Output is correct
28 Correct 21 ms 14796 KB Output is correct
29 Correct 16 ms 14796 KB Output is correct
30 Correct 14 ms 14620 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14412 KB Output is correct
2 Correct 11 ms 14412 KB Output is correct
3 Correct 11 ms 14412 KB Output is correct
4 Correct 11 ms 14412 KB Output is correct
5 Correct 12 ms 14628 KB Output is correct
6 Correct 25 ms 14864 KB Output is correct
7 Correct 24 ms 15256 KB Output is correct
8 Correct 26 ms 15348 KB Output is correct
9 Correct 26 ms 15516 KB Output is correct
10 Correct 27 ms 15228 KB Output is correct
11 Correct 22 ms 14860 KB Output is correct
12 Correct 20 ms 14708 KB Output is correct
13 Correct 14 ms 14620 KB Output is correct
14 Correct 14 ms 14788 KB Output is correct
15 Correct 30 ms 15052 KB Output is correct
16 Correct 25 ms 15308 KB Output is correct
17 Correct 25 ms 14964 KB Output is correct
18 Correct 25 ms 15172 KB Output is correct
19 Correct 26 ms 15316 KB Output is correct
20 Correct 24 ms 14968 KB Output is correct
21 Correct 11 ms 14668 KB Output is correct
22 Correct 27 ms 15556 KB Output is correct
23 Correct 26 ms 15308 KB Output is correct
24 Correct 26 ms 15324 KB Output is correct
25 Correct 26 ms 14924 KB Output is correct
26 Correct 19 ms 14796 KB Output is correct
27 Correct 13 ms 14756 KB Output is correct
28 Correct 21 ms 14796 KB Output is correct
29 Correct 16 ms 14796 KB Output is correct
30 Correct 14 ms 14620 KB Output is correct
31 Runtime error 300 ms 74928 KB Execution killed with signal 6
32 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1668 ms 196080 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Runtime error 1864 ms 212268 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14412 KB Output is correct
2 Correct 11 ms 14412 KB Output is correct
3 Correct 11 ms 14412 KB Output is correct
4 Correct 11 ms 14412 KB Output is correct
5 Correct 12 ms 14628 KB Output is correct
6 Correct 25 ms 14864 KB Output is correct
7 Correct 24 ms 15256 KB Output is correct
8 Correct 26 ms 15348 KB Output is correct
9 Correct 26 ms 15516 KB Output is correct
10 Correct 27 ms 15228 KB Output is correct
11 Correct 22 ms 14860 KB Output is correct
12 Correct 20 ms 14708 KB Output is correct
13 Correct 14 ms 14620 KB Output is correct
14 Correct 14 ms 14788 KB Output is correct
15 Correct 30 ms 15052 KB Output is correct
16 Correct 25 ms 15308 KB Output is correct
17 Correct 25 ms 14964 KB Output is correct
18 Correct 25 ms 15172 KB Output is correct
19 Correct 26 ms 15316 KB Output is correct
20 Correct 24 ms 14968 KB Output is correct
21 Correct 11 ms 14668 KB Output is correct
22 Correct 27 ms 15556 KB Output is correct
23 Correct 26 ms 15308 KB Output is correct
24 Correct 26 ms 15324 KB Output is correct
25 Correct 26 ms 14924 KB Output is correct
26 Correct 19 ms 14796 KB Output is correct
27 Correct 13 ms 14756 KB Output is correct
28 Correct 21 ms 14796 KB Output is correct
29 Correct 16 ms 14796 KB Output is correct
30 Correct 14 ms 14620 KB Output is correct
31 Runtime error 300 ms 74928 KB Execution killed with signal 6
32 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14412 KB Output is correct
2 Correct 11 ms 14412 KB Output is correct
3 Correct 11 ms 14412 KB Output is correct
4 Correct 11 ms 14412 KB Output is correct
5 Correct 12 ms 14628 KB Output is correct
6 Correct 25 ms 14864 KB Output is correct
7 Correct 24 ms 15256 KB Output is correct
8 Correct 26 ms 15348 KB Output is correct
9 Correct 26 ms 15516 KB Output is correct
10 Correct 27 ms 15228 KB Output is correct
11 Correct 22 ms 14860 KB Output is correct
12 Correct 20 ms 14708 KB Output is correct
13 Correct 14 ms 14620 KB Output is correct
14 Correct 14 ms 14788 KB Output is correct
15 Correct 30 ms 15052 KB Output is correct
16 Correct 25 ms 15308 KB Output is correct
17 Correct 25 ms 14964 KB Output is correct
18 Correct 25 ms 15172 KB Output is correct
19 Correct 26 ms 15316 KB Output is correct
20 Correct 24 ms 14968 KB Output is correct
21 Correct 11 ms 14668 KB Output is correct
22 Correct 27 ms 15556 KB Output is correct
23 Correct 26 ms 15308 KB Output is correct
24 Correct 26 ms 15324 KB Output is correct
25 Correct 26 ms 14924 KB Output is correct
26 Correct 19 ms 14796 KB Output is correct
27 Correct 13 ms 14756 KB Output is correct
28 Correct 21 ms 14796 KB Output is correct
29 Correct 16 ms 14796 KB Output is correct
30 Correct 14 ms 14620 KB Output is correct
31 Runtime error 300 ms 74928 KB Execution killed with signal 6
32 Halted 0 ms 0 KB -