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Submission #527710

# Submission time Handle Problem Language Result Execution time Memory
527710 2022-02-18T04:44:52 Z 4fecta Examination (JOI19_examination) C++17
100 / 100
 1045 ms 68312 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define int ll
#define ld long double
#define pii pair<int, int>
#define f first
#define s second
#define boost() cin.tie(0), cin.sync_with_stdio(0)

struct pt {
    int x, y, z, t;
};

bool cmp(pt p, pt q) {
    if (p.z == q.z) return p.t > q.t;
    return p.z < q.z;
}

bool cmp1(pt p, pt q) {
    if (p.x != q.x) return p.x < q.x;
    return p.y < q.y;
}

const int MN = 200005;

int n, q, x, y, z, ans[MN], bit[MN];
vector<int> xs, ys, zs, upds;
map<int, int> mx, my, mz;
vector<pt> v;

void upd(int x, int val) {
    if (val > 0) upds.push_back(x);
    for (int i = x; i < MN; i += i & -i) bit[i] += val;
}

void clear() {
    for (int x : upds) upd(x, -1);
    upds.clear();
}

int qry(int x) {
    int ret = 0;
    for (int i = x; i > 0; i -= i & -i) ret += bit[i];
    return ret;
}

void solve(int l, int r) {
    if (l == r) return;
    int mid = (l + r) >> 1;
    vector<pt> ps, qs;
    for (int i = l; i <= mid; i++) if (v[i].t) qs.push_back(v[i]);
    for (int i = mid + 1; i <= r; i++) if (!v[i].t) ps.push_back(v[i]);
    sort(ps.begin(), ps.end(), cmp1);
    sort(qs.begin(), qs.end(), cmp1);
    int ptr = ps.size() - 1;
    for (int i = qs.size() - 1; i >= 0; i--) {
        while (ptr >= 0 && ps[ptr].x >= qs[i].x) upd(ps[ptr--].y, 1);
        ans[qs[i].t] += qry(MN - 1) - qry(qs[i].y - 1);
    }
    clear();
    solve(l, mid), solve(mid + 1, r);
}

int32_t main() {
    boost();

    cin >> n >> q;
    for (int i = 1; i <= n; i++) {
        cin >> x >> y;
        z = x + y;
        xs.push_back(x);
        ys.push_back(y);
        zs.push_back(z);
        v.push_back({x, y, z, 0});
    }
    for (int i = 1; i <= q; i++) {
        cin >> x >> y >> z;
        xs.push_back(x);
        ys.push_back(y);
        zs.push_back(z);
        v.push_back({x, y, z, i});
    }
    sort(xs.begin(), xs.end());
    xs.erase(unique(xs.begin(), xs.end()), xs.end());
    sort(ys.begin(), ys.end());
    ys.erase(unique(ys.begin(), ys.end()), ys.end());
    sort(zs.begin(), zs.end());
    zs.erase(unique(zs.begin(), zs.end()), zs.end());
    for (int i = 0; i < xs.size(); i++) mx[xs[i]] = i + 1;
    for (int i = 0; i < ys.size(); i++) my[ys[i]] = i + 1;
    for (int i = 0; i < zs.size(); i++) mz[zs[i]] = i + 1;
    for (int i = 0; i < v.size(); i++) v[i].x = mx[v[i].x], v[i].y = my[v[i].y], v[i].z = mz[v[i].z];
    sort(v.begin(), v.end(), cmp);
    solve(0, v.size() - 1);
    for (int i = 1; i <= q; i++) printf("%lld\n", ans[i]);

    return 0;
}

Compilation message

examination.cpp: In function 'int32_t main()':
examination.cpp:90:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   90 |     for (int i = 0; i < xs.size(); i++) mx[xs[i]] = i + 1;
      |                     ~~^~~~~~~~~~~
examination.cpp:91:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     for (int i = 0; i < ys.size(); i++) my[ys[i]] = i + 1;
      |                     ~~^~~~~~~~~~~
examination.cpp:92:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |     for (int i = 0; i < zs.size(); i++) mz[zs[i]] = i + 1;
      |                     ~~^~~~~~~~~~~
examination.cpp:93:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<pt>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |     for (int i = 0; i < v.size(); i++) v[i].x = mx[v[i].x], v[i].y = my[v[i].y], v[i].z = mz[v[i].z];
      |                     ~~^~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 324 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 0 ms 324 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 14 ms 2240 KB Output is correct
8 Correct 14 ms 2244 KB Output is correct
9 Correct 14 ms 2240 KB Output is correct
10 Correct 11 ms 1860 KB Output is correct
11 Correct 13 ms 1864 KB Output is correct
12 Correct 7 ms 1044 KB Output is correct
13 Correct 11 ms 2200 KB Output is correct
14 Correct 11 ms 2120 KB Output is correct
15 Correct 17 ms 2188 KB Output is correct
16 Correct 9 ms 1736 KB Output is correct
17 Correct 11 ms 1780 KB Output is correct
18 Correct 5 ms 1076 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 590 ms 43080 KB Output is correct
2 Correct 697 ms 43124 KB Output is correct
3 Correct 650 ms 43032 KB Output is correct
4 Correct 414 ms 35688 KB Output is correct
5 Correct 506 ms 36328 KB Output is correct
6 Correct 260 ms 25596 KB Output is correct
7 Correct 566 ms 41828 KB Output is correct
8 Correct 564 ms 41688 KB Output is correct
9 Correct 541 ms 40352 KB Output is correct
10 Correct 416 ms 36336 KB Output is correct
11 Correct 395 ms 35680 KB Output is correct
12 Correct 207 ms 25632 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 590 ms 43080 KB Output is correct
2 Correct 697 ms 43124 KB Output is correct
3 Correct 650 ms 43032 KB Output is correct
4 Correct 414 ms 35688 KB Output is correct
5 Correct 506 ms 36328 KB Output is correct
6 Correct 260 ms 25596 KB Output is correct
7 Correct 566 ms 41828 KB Output is correct
8 Correct 564 ms 41688 KB Output is correct
9 Correct 541 ms 40352 KB Output is correct
10 Correct 416 ms 36336 KB Output is correct
11 Correct 395 ms 35680 KB Output is correct
12 Correct 207 ms 25632 KB Output is correct
13 Correct 737 ms 43520 KB Output is correct
14 Correct 732 ms 45564 KB Output is correct
15 Correct 633 ms 43164 KB Output is correct
16 Correct 537 ms 33212 KB Output is correct
17 Correct 595 ms 33956 KB Output is correct
18 Correct 294 ms 24996 KB Output is correct
19 Correct 784 ms 43520 KB Output is correct
20 Correct 798 ms 44656 KB Output is correct
21 Correct 701 ms 42400 KB Output is correct
22 Correct 491 ms 36340 KB Output is correct
23 Correct 456 ms 35656 KB Output is correct
24 Correct 204 ms 25628 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 324 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 0 ms 324 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 14 ms 2240 KB Output is correct
8 Correct 14 ms 2244 KB Output is correct
9 Correct 14 ms 2240 KB Output is correct
10 Correct 11 ms 1860 KB Output is correct
11 Correct 13 ms 1864 KB Output is correct
12 Correct 7 ms 1044 KB Output is correct
13 Correct 11 ms 2200 KB Output is correct
14 Correct 11 ms 2120 KB Output is correct
15 Correct 17 ms 2188 KB Output is correct
16 Correct 9 ms 1736 KB Output is correct
17 Correct 11 ms 1780 KB Output is correct
18 Correct 5 ms 1076 KB Output is correct
19 Correct 590 ms 43080 KB Output is correct
20 Correct 697 ms 43124 KB Output is correct
21 Correct 650 ms 43032 KB Output is correct
22 Correct 414 ms 35688 KB Output is correct
23 Correct 506 ms 36328 KB Output is correct
24 Correct 260 ms 25596 KB Output is correct
25 Correct 566 ms 41828 KB Output is correct
26 Correct 564 ms 41688 KB Output is correct
27 Correct 541 ms 40352 KB Output is correct
28 Correct 416 ms 36336 KB Output is correct
29 Correct 395 ms 35680 KB Output is correct
30 Correct 207 ms 25632 KB Output is correct
31 Correct 737 ms 43520 KB Output is correct
32 Correct 732 ms 45564 KB Output is correct
33 Correct 633 ms 43164 KB Output is correct
34 Correct 537 ms 33212 KB Output is correct
35 Correct 595 ms 33956 KB Output is correct
36 Correct 294 ms 24996 KB Output is correct
37 Correct 784 ms 43520 KB Output is correct
38 Correct 798 ms 44656 KB Output is correct
39 Correct 701 ms 42400 KB Output is correct
40 Correct 491 ms 36340 KB Output is correct
41 Correct 456 ms 35656 KB Output is correct
42 Correct 204 ms 25628 KB Output is correct
43 Correct 1045 ms 65256 KB Output is correct
44 Correct 1022 ms 65376 KB Output is correct
45 Correct 999 ms 67892 KB Output is correct
46 Correct 776 ms 48592 KB Output is correct
47 Correct 782 ms 50168 KB Output is correct
48 Correct 269 ms 21356 KB Output is correct
49 Correct 996 ms 68312 KB Output is correct
50 Correct 968 ms 65340 KB Output is correct
51 Correct 994 ms 67696 KB Output is correct
52 Correct 745 ms 49992 KB Output is correct
53 Correct 515 ms 45876 KB Output is correct