oj.uz

Submission #104353

# Submission time Handle Problem Language Result Execution time Memory
104353 2019-04-05T14:54:43 Z tieunhi New Home (APIO18_new_home) C++14
47 / 100
 5000 ms 284688 KB 
#include <bits/stdc++.h>
#define FOR(i, u, v) for (int i = u; i <= v; i++)
#define FORD(i, v, u) for (int i = v; i >= u; i--)
#define pii pair<int, int>
#define mp make_pair
#define F first
#define S second
#define PB push_back
#define maxN 1000000000
#define N 300005
using namespace std;

struct Store {
    int x, type, a, b;
};
struct Query {
    int x, t, id;
    bool operator < (const Query &rhs) const {
        return x < rhs.x;
    }
};
struct Segment {

    int L, R, a, b;
    Segment(int _L=0, int _R=0, int _a=0, int _b=0) : L(_L), R(_R), a(_a), b(_b) {}
};
bool cmpSegLR(Segment p, Segment q) {
    return p.R > q.R || (p.L == q.L && p.L > q.L);
}
bool cmpSegRL(Segment p, Segment q) {
    return p.L < q.L || (p.R == q.R && p.R < q.R);
}

struct SegOnYear {
    vector<int> t[N << 2];
    void update(int l, int r, int id, int x, int y, int val) {
        if (l > y || r < x) return;
        if (l >= x && r <= y) {
            t[id].PB(val);
            return;
        }
        int mid = (r + l)/2;
        update(l, mid, id*2, x, y, val);
        update(mid+1, r, id*2+1, x, y, val);
    }
}tSegLR, tSegRL;
Store sto[N];
Query que[N];
map<pii, int> maLR, maRL;
vector<Segment> segLR, segRL;
int n, k, Q, tMax;
multiset<int> curSet;

vector<pair<int, pii> > allType[N];
int res[N];

int findLef(int x) {
    auto it = curSet.upper_bound(x);
    it--;
    return (*it);
}
int findRig(int x) {
    auto it = curSet.upper_bound(x);
    return (*it);
}
void addSeg(int L, int R, int time) {
    int mid = (R + L)/2;
    maLR[mp(L, mid)] = time;
    maRL[mp(mid, R)] = time;
}
void remSeg(int L, int R, int time) {
    int mid = (R + L)/2;
    if (time >= maLR[mp(L, mid)])
        segLR.PB(Segment(L, mid, maLR[mp(L, mid)], time));
    if (time >= maRL[mp(mid, R)])
        segRL.PB(Segment(mid, R, maRL[mp(mid, R)], time));
}
void setup() {
    cin >> n >> k >> Q;

    vector<int> allYear;
    FOR(i, 1, n) {
        cin >> sto[i].x >> sto[i].type >> sto[i].a >> sto[i].b;
        sto[i].x *= 2;
    }
    FOR(i, 1, Q) {
        cin >> que[i].x >> que[i].t, que[i].x *= 2;
        que[i].id = i;
        allYear.PB(que[i].t);
    }
    sort(allYear.begin(), allYear.end());
    allYear.resize(unique(allYear.begin(), allYear.end()) - allYear.begin());
    FOR(i, 1, n) {
        sto[i].a = lower_bound(allYear.begin(), allYear.end(), sto[i].a) - allYear.begin() + 1;
        sto[i].b = upper_bound(allYear.begin(), allYear.end(), sto[i].b) - allYear.begin();
    }
    FOR(i, 1, Q) {
        que[i].t = lower_bound(allYear.begin(), allYear.end(), que[i].t) - allYear.begin() + 1;
    }
    tMax = allYear.size() + 1;
    sort(que+1, que+Q+1);

    FOR(i, 1, n) {
        if (sto[i].a > sto[i].b) continue;
        int type = sto[i].type;
        allType[type].PB(mp(sto[i].a, mp(0, sto[i].x)));
        allType[type].PB(mp(sto[i].b, mp(1, sto[i].x)));
    }
    FOR(i, 1, k) {
        curSet.clear();
        curSet.insert(-maxN); curSet.insert(maxN);
        addSeg(-maxN, maxN, 0);
        sort(allType[i].begin(), allType[i].end());
        for (auto z : allType[i]) {
            int x = z.S.S;
            int time = z.F;
            int type = z.S.F;
            if (type == 0) {
                int L = findLef(x), R = findRig(x);

                remSeg(L, R, time-1);
                addSeg(L, x, time);
                addSeg(x, R, time);
                curSet.insert(x);
            }
            else {
                auto it = curSet.find(x);
                curSet.erase(it);
                int L = findLef(x), R = findRig(x);
                remSeg(L, x, time);
                remSeg(x, R, time);
                addSeg(L, R, time+1);
            }
        }
    }
    sort(segLR.begin(), segLR.end(), cmpSegLR);
    sort(segRL.begin(), segRL.end(), cmpSegRL);
    for (int i = 0; i < segLR.size(); i++) {
        int a = segLR[i].a;
        int b = segLR[i].b;
        tSegLR.update(1, tMax, 1, a, b, i);
    }
    for (int i = 0; i < segRL.size(); i++) {
        int a = segRL[i].a;
        int b = segRL[i].b;
        tSegRL.update(1, tMax, 1, a, b, i);
    }
}

void rayLR(vector<int> seg, vector<int> idQ) {

    reverse(idQ.begin(), idQ.end());
    int x0 = maxN, pp = -1;
    for (auto id : idQ) {
        while (pp < (int)seg.size()-1 && segLR[seg[pp+1]].R >= que[id].x) {
            pp++;
            x0 = min(x0, segLR[seg[pp]].L);
        }
        if (pp != -1) res[que[id].id] = max(res[que[id].id], que[id].x - x0);
    }
}

void rayRL(vector<int> seg, vector<int> idQ) {

    int y0 = -maxN, pp = -1;
    for (auto id : idQ) {
        while (pp < (int)seg.size()-1 && segRL[seg[pp+1]].L <= que[id].x) {
            pp++;
            y0 = max(y0, segRL[seg[pp]].R);
        }
        if (pp != -1) res[que[id].id] = max(res[que[id].id], y0 - que[id].x);
    }
}

void solve(int l, int r, int id, vector<int> curQ) {

    if (curQ.size() == 0) return;
    rayLR(tSegLR.t[id], curQ);
    rayRL(tSegRL.t[id], curQ);
    if (l == r) return;
    int mid = (r + l)/2;

    vector<int> qLef, qRig;
    for (auto id : curQ) {
        if (que[id].t <= mid) qLef.PB(id);
        else qRig.PB(id);
    }
    solve(l, mid, id*2, qLef);
    solve(mid+1, r, id*2+1, qRig);
}
int cnt[N], impossible[N];
void checkImpossible() {

    vector<pair<pii, int> > check;
    FOR(i, 1, n) {
        check.PB(mp(mp(sto[i].a, 0), sto[i].type));
        check.PB(mp(mp(sto[i].b, 2), sto[i].type));
    }
    FOR(i, 1, Q) {
        check.PB(mp(mp(que[i].t, 1), que[i].id));
    }

    sort(check.begin(), check.end());

    int curCnt = 0;
    for (auto z : check) {
        int time = z.F.F;
        int type = z.F.S;
        int kind = z.S;
        if (type == 1) impossible[kind] = (curCnt < k);
        else {

            if (cnt[kind]) curCnt--;
            if (type == 0) cnt[kind]++;
            else cnt[kind]--;
            if (cnt[kind]) curCnt++;
        }
    }
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen("NEWHOME.INP", "r", stdin);
    //freopen("NEWHOME.OUT", "w", stdout);
    setup();

    vector<int> allQ;
    FOR(i, 1, Q) allQ.PB(i);

    solve(1, tMax, 1, allQ);


    checkImpossible();
    FOR(i, 1, Q) {
        if (impossible[i]) cout <<-1<<'\n';
        else cout <<res[i]/2<<'\n';
    }
}

Compilation message

new_home.cpp: In function 'void setup()':
new_home.cpp:138:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < segLR.size(); i++) {
                     ~~^~~~~~~~~~~~~~
new_home.cpp:143:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < segRL.size(); i++) {
                     ~~^~~~~~~~~~~~~~
new_home.cpp: In function 'void checkImpossible()':
new_home.cpp:207:13: warning: unused variable 'time' [-Wunused-variable]
         int time = z.F.F;
             ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 66 ms 63736 KB Output is correct
2 Correct 64 ms 63612 KB Output is correct
3 Correct 65 ms 63740 KB Output is correct
4 Correct 73 ms 63736 KB Output is correct
5 Correct 67 ms 63992 KB Output is correct
6 Correct 68 ms 64220 KB Output is correct
7 Correct 78 ms 64120 KB Output is correct
8 Correct 71 ms 64120 KB Output is correct
9 Correct 82 ms 64248 KB Output is correct
10 Correct 72 ms 64120 KB Output is correct
11 Correct 72 ms 64120 KB Output is correct
12 Correct 79 ms 64120 KB Output is correct
13 Correct 70 ms 63992 KB Output is correct
14 Correct 73 ms 64052 KB Output is correct
15 Correct 71 ms 64120 KB Output is correct
16 Correct 71 ms 64120 KB Output is correct
17 Correct 76 ms 64092 KB Output is correct
18 Correct 77 ms 64248 KB Output is correct
19 Correct 70 ms 64120 KB Output is correct
20 Correct 72 ms 64120 KB Output is correct
21 Correct 65 ms 63992 KB Output is correct
22 Correct 83 ms 64092 KB Output is correct
23 Correct 75 ms 64120 KB Output is correct
24 Correct 74 ms 64092 KB Output is correct
25 Correct 72 ms 64248 KB Output is correct
26 Correct 72 ms 64120 KB Output is correct
27 Correct 70 ms 63992 KB Output is correct
28 Correct 77 ms 64128 KB Output is correct
29 Correct 67 ms 64120 KB Output is correct
30 Correct 75 ms 63992 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 66 ms 63736 KB Output is correct
2 Correct 64 ms 63612 KB Output is correct
3 Correct 65 ms 63740 KB Output is correct
4 Correct 73 ms 63736 KB Output is correct
5 Correct 67 ms 63992 KB Output is correct
6 Correct 68 ms 64220 KB Output is correct
7 Correct 78 ms 64120 KB Output is correct
8 Correct 71 ms 64120 KB Output is correct
9 Correct 82 ms 64248 KB Output is correct
10 Correct 72 ms 64120 KB Output is correct
11 Correct 72 ms 64120 KB Output is correct
12 Correct 79 ms 64120 KB Output is correct
13 Correct 70 ms 63992 KB Output is correct
14 Correct 73 ms 64052 KB Output is correct
15 Correct 71 ms 64120 KB Output is correct
16 Correct 71 ms 64120 KB Output is correct
17 Correct 76 ms 64092 KB Output is correct
18 Correct 77 ms 64248 KB Output is correct
19 Correct 70 ms 64120 KB Output is correct
20 Correct 72 ms 64120 KB Output is correct
21 Correct 65 ms 63992 KB Output is correct
22 Correct 83 ms 64092 KB Output is correct
23 Correct 75 ms 64120 KB Output is correct
24 Correct 74 ms 64092 KB Output is correct
25 Correct 72 ms 64248 KB Output is correct
26 Correct 72 ms 64120 KB Output is correct
27 Correct 70 ms 63992 KB Output is correct
28 Correct 77 ms 64128 KB Output is correct
29 Correct 67 ms 64120 KB Output is correct
30 Correct 75 ms 63992 KB Output is correct
31 Correct 1741 ms 129816 KB Output is correct
32 Correct 192 ms 75060 KB Output is correct
33 Correct 1794 ms 127668 KB Output is correct
34 Correct 1738 ms 128588 KB Output is correct
35 Correct 2084 ms 129136 KB Output is correct
36 Correct 2023 ms 128840 KB Output is correct
37 Correct 1229 ms 123224 KB Output is correct
38 Correct 1238 ms 123036 KB Output is correct
39 Correct 962 ms 116120 KB Output is correct
40 Correct 805 ms 117588 KB Output is correct
41 Correct 1473 ms 122584 KB Output is correct
42 Correct 1616 ms 123700 KB Output is correct
43 Correct 180 ms 76868 KB Output is correct
44 Correct 1800 ms 122556 KB Output is correct
45 Correct 1521 ms 118616 KB Output is correct
46 Correct 1298 ms 111704 KB Output is correct
47 Correct 755 ms 109680 KB Output is correct
48 Correct 626 ms 107216 KB Output is correct
49 Correct 900 ms 113760 KB Output is correct
50 Correct 1208 ms 121300 KB Output is correct
51 Correct 929 ms 111664 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5061 ms 284688 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5048 ms 238768 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 66 ms 63736 KB Output is correct
2 Correct 64 ms 63612 KB Output is correct
3 Correct 65 ms 63740 KB Output is correct
4 Correct 73 ms 63736 KB Output is correct
5 Correct 67 ms 63992 KB Output is correct
6 Correct 68 ms 64220 KB Output is correct
7 Correct 78 ms 64120 KB Output is correct
8 Correct 71 ms 64120 KB Output is correct
9 Correct 82 ms 64248 KB Output is correct
10 Correct 72 ms 64120 KB Output is correct
11 Correct 72 ms 64120 KB Output is correct
12 Correct 79 ms 64120 KB Output is correct
13 Correct 70 ms 63992 KB Output is correct
14 Correct 73 ms 64052 KB Output is correct
15 Correct 71 ms 64120 KB Output is correct
16 Correct 71 ms 64120 KB Output is correct
17 Correct 76 ms 64092 KB Output is correct
18 Correct 77 ms 64248 KB Output is correct
19 Correct 70 ms 64120 KB Output is correct
20 Correct 72 ms 64120 KB Output is correct
21 Correct 65 ms 63992 KB Output is correct
22 Correct 83 ms 64092 KB Output is correct
23 Correct 75 ms 64120 KB Output is correct
24 Correct 74 ms 64092 KB Output is correct
25 Correct 72 ms 64248 KB Output is correct
26 Correct 72 ms 64120 KB Output is correct
27 Correct 70 ms 63992 KB Output is correct
28 Correct 77 ms 64128 KB Output is correct
29 Correct 67 ms 64120 KB Output is correct
30 Correct 75 ms 63992 KB Output is correct
31 Correct 1741 ms 129816 KB Output is correct
32 Correct 192 ms 75060 KB Output is correct
33 Correct 1794 ms 127668 KB Output is correct
34 Correct 1738 ms 128588 KB Output is correct
35 Correct 2084 ms 129136 KB Output is correct
36 Correct 2023 ms 128840 KB Output is correct
37 Correct 1229 ms 123224 KB Output is correct
38 Correct 1238 ms 123036 KB Output is correct
39 Correct 962 ms 116120 KB Output is correct
40 Correct 805 ms 117588 KB Output is correct
41 Correct 1473 ms 122584 KB Output is correct
42 Correct 1616 ms 123700 KB Output is correct
43 Correct 180 ms 76868 KB Output is correct
44 Correct 1800 ms 122556 KB Output is correct
45 Correct 1521 ms 118616 KB Output is correct
46 Correct 1298 ms 111704 KB Output is correct
47 Correct 755 ms 109680 KB Output is correct
48 Correct 626 ms 107216 KB Output is correct
49 Correct 900 ms 113760 KB Output is correct
50 Correct 1208 ms 121300 KB Output is correct
51 Correct 929 ms 111664 KB Output is correct
52 Correct 1266 ms 121720 KB Output is correct
53 Correct 1319 ms 121788 KB Output is correct
54 Correct 1582 ms 126924 KB Output is correct
55 Correct 1372 ms 125404 KB Output is correct
56 Correct 1193 ms 125260 KB Output is correct
57 Correct 1602 ms 123552 KB Output is correct
58 Correct 1488 ms 124372 KB Output is correct
59 Correct 1459 ms 125028 KB Output is correct
60 Correct 1614 ms 123952 KB Output is correct
61 Correct 213 ms 82672 KB Output is correct
62 Correct 1177 ms 123480 KB Output is correct
63 Correct 1393 ms 127832 KB Output is correct
64 Correct 1658 ms 129324 KB Output is correct
65 Correct 1618 ms 130324 KB Output is correct
66 Correct 1670 ms 125660 KB Output is correct
67 Correct 323 ms 84248 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 66 ms 63736 KB Output is correct
2 Correct 64 ms 63612 KB Output is correct
3 Correct 65 ms 63740 KB Output is correct
4 Correct 73 ms 63736 KB Output is correct
5 Correct 67 ms 63992 KB Output is correct
6 Correct 68 ms 64220 KB Output is correct
7 Correct 78 ms 64120 KB Output is correct
8 Correct 71 ms 64120 KB Output is correct
9 Correct 82 ms 64248 KB Output is correct
10 Correct 72 ms 64120 KB Output is correct
11 Correct 72 ms 64120 KB Output is correct
12 Correct 79 ms 64120 KB Output is correct
13 Correct 70 ms 63992 KB Output is correct
14 Correct 73 ms 64052 KB Output is correct
15 Correct 71 ms 64120 KB Output is correct
16 Correct 71 ms 64120 KB Output is correct
17 Correct 76 ms 64092 KB Output is correct
18 Correct 77 ms 64248 KB Output is correct
19 Correct 70 ms 64120 KB Output is correct
20 Correct 72 ms 64120 KB Output is correct
21 Correct 65 ms 63992 KB Output is correct
22 Correct 83 ms 64092 KB Output is correct
23 Correct 75 ms 64120 KB Output is correct
24 Correct 74 ms 64092 KB Output is correct
25 Correct 72 ms 64248 KB Output is correct
26 Correct 72 ms 64120 KB Output is correct
27 Correct 70 ms 63992 KB Output is correct
28 Correct 77 ms 64128 KB Output is correct
29 Correct 67 ms 64120 KB Output is correct
30 Correct 75 ms 63992 KB Output is correct
31 Correct 1741 ms 129816 KB Output is correct
32 Correct 192 ms 75060 KB Output is correct
33 Correct 1794 ms 127668 KB Output is correct
34 Correct 1738 ms 128588 KB Output is correct
35 Correct 2084 ms 129136 KB Output is correct
36 Correct 2023 ms 128840 KB Output is correct
37 Correct 1229 ms 123224 KB Output is correct
38 Correct 1238 ms 123036 KB Output is correct
39 Correct 962 ms 116120 KB Output is correct
40 Correct 805 ms 117588 KB Output is correct
41 Correct 1473 ms 122584 KB Output is correct
42 Correct 1616 ms 123700 KB Output is correct
43 Correct 180 ms 76868 KB Output is correct
44 Correct 1800 ms 122556 KB Output is correct
45 Correct 1521 ms 118616 KB Output is correct
46 Correct 1298 ms 111704 KB Output is correct
47 Correct 755 ms 109680 KB Output is correct
48 Correct 626 ms 107216 KB Output is correct
49 Correct 900 ms 113760 KB Output is correct
50 Correct 1208 ms 121300 KB Output is correct
51 Correct 929 ms 111664 KB Output is correct
52 Execution timed out 5061 ms 284688 KB Time limit exceeded
53 Halted 0 ms 0 KB -