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Submission #1108606

# Submission time Handle Problem Language Result Execution time Memory
1108606 2024-11-04T15:03:29 Z FubuGold Examination (JOI19_examination) C++14
43 / 100
 1274 ms 481164 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAXN = 100000;
const int SQRT = 350;
const int NUM_B = MAXN / SQRT;

struct BIT {
    vector<int> tree;
    int n;
    int total_sum;
    void init(int n) {
        this->n = n;
        total_sum = 0;
        tree.assign(n+1,0);
    }
    void update(int pos,int val) {
        total_sum += val;
        for (;pos <= n;pos += pos & (-pos)) tree[pos] += val;
    }
    int query(int pos) {
        int sum = 0;
        for (;pos > 0;pos -= pos & (-pos)) sum += tree[pos];
        return sum;
    }
    int suf_query(int pos) {
        assert(pos <= n);
        return total_sum - query(pos-1);
    }
} tree[NUM_B+2];

vector<int> compress[3];
vector<vector<int>> point;
void clear_vec(vector<int> &vec) {
    sort(vec.begin(),vec.end());
    vec.erase(unique(vec.begin(),vec.end()),vec.end());
}
int get_id(int x,vector<int> &vec) {
    return lower_bound(vec.begin(),vec.end(),x) - vec.begin() + 1;
}
struct Query {
    int a,b,c,id,type;
    bool operator < (const Query &qr) {
        if (c == qr.c) return type < qr.type;
        return c > qr.c;
    }
};
vector<Query> query;
int n,q;
int ans[MAXN+1];

int main() {
    cin.tie(0) -> sync_with_stdio(0);
    cin >> n >> q;
    for (int i=1;i<=n;i++) {
        Query qr; cin >> qr.a >> qr.b;
        qr.id = i;
        qr.type = 0;
        qr.c = qr.a + qr.b;
        compress[0].push_back(qr.a);
        compress[1].push_back(qr.b);
        compress[2].push_back(qr.c);
        query.push_back(qr);
    }
    for (int i=1;i<=q;i++) {
        Query qr; cin >> qr.a >> qr.b >> qr.c;
        qr.id = i;
        qr.type = 1;
        compress[0].push_back(qr.a);
        compress[1].push_back(qr.b);
        compress[2].push_back(qr.c);
        query.push_back(qr);
    }

    sort(query.begin(),query.end());
    for (int i=0;i<3;i++) clear_vec(compress[i]);
    int comp_a_sz = compress[0].size();
    point.assign(comp_a_sz+10,vector<int>());
    int mx_b_id = comp_a_sz / SQRT;
    for (int i=1 / SQRT;i<=mx_b_id;i++) tree[i].init(compress[1].size()+1);

    for (int qr_id = 0; qr_id < query.size();qr_id++) {
        Query qr = query[qr_id];
//        cerr << qr_id << ' ' << qr.type << ' ' << qr.id << '\n';
        qr.a = get_id(qr.a,compress[0]);
        qr.b = get_id(qr.b,compress[1]);
        qr.c = get_id(qr.c,compress[2]);
        if (qr.type == 0) {
            tree[qr.a / SQRT].update(qr.b,1);
//            assert(point[qr.a].empty() || point[qr.a].back() >= qr.b);
            point[qr.a].push_back(qr.b);
        }
        else {
            int cur_id = qr.a / SQRT;
            int cnt = 0;
            for (int i = cur_id + 1; i <= mx_b_id;i++) {
                cnt += tree[i].suf_query(qr.b);
            }
//            cerr << "ok1\n";
            for (int i = qr.a; i / SQRT == cur_id && i <= comp_a_sz;i++) {
//                cerr << i << ' ' << point.size() << ' ' << '\n';
//                cerr << ' ' << upper_bound(point[i].begin(),point[i].end(),qr.b,greater<int>()) - point[i].begin() << '\n';
                cnt += upper_bound(point[i].begin(),point[i].end(),qr.b,greater<int>()) - point[i].begin();
            }
            ans[qr.id] = cnt;
        }
    }
    for (int i=1;i<=q;i++) cout << ans[i] << '\n';
    return 0;
}

Compilation message

examination.cpp: In function 'int main()':
examination.cpp:83:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Query>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |     for (int qr_id = 0; qr_id < query.size();qr_id++) {
      |                         ~~~~~~^~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 504 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 8 ms 1360 KB Output is correct
8 Correct 8 ms 1360 KB Output is correct
9 Correct 8 ms 1360 KB Output is correct
10 Correct 6 ms 848 KB Output is correct
11 Correct 4 ms 796 KB Output is correct
12 Correct 3 ms 592 KB Output is correct
13 Correct 8 ms 1364 KB Output is correct
14 Correct 9 ms 1360 KB Output is correct
15 Correct 11 ms 1360 KB Output is correct
16 Correct 4 ms 848 KB Output is correct
17 Correct 6 ms 976 KB Output is correct
18 Correct 2 ms 592 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1064 ms 95436 KB Output is correct
2 Correct 1055 ms 96776 KB Output is correct
3 Correct 1128 ms 97144 KB Output is correct
4 Correct 283 ms 12760 KB Output is correct
5 Correct 146 ms 10208 KB Output is correct
6 Correct 65 ms 10208 KB Output is correct
7 Correct 1274 ms 76220 KB Output is correct
8 Correct 512 ms 77004 KB Output is correct
9 Correct 532 ms 61904 KB Output is correct
10 Correct 99 ms 10208 KB Output is correct
11 Correct 226 ms 11984 KB Output is correct
12 Correct 49 ms 10208 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1064 ms 95436 KB Output is correct
2 Correct 1055 ms 96776 KB Output is correct
3 Correct 1128 ms 97144 KB Output is correct
4 Correct 283 ms 12760 KB Output is correct
5 Correct 146 ms 10208 KB Output is correct
6 Correct 65 ms 10208 KB Output is correct
7 Correct 1274 ms 76220 KB Output is correct
8 Correct 512 ms 77004 KB Output is correct
9 Correct 532 ms 61904 KB Output is correct
10 Correct 99 ms 10208 KB Output is correct
11 Correct 226 ms 11984 KB Output is correct
12 Correct 49 ms 10208 KB Output is correct
13 Correct 992 ms 96072 KB Output is correct
14 Correct 1002 ms 96048 KB Output is correct
15 Correct 972 ms 95604 KB Output is correct
16 Correct 232 ms 13260 KB Output is correct
17 Correct 147 ms 11512 KB Output is correct
18 Correct 76 ms 10208 KB Output is correct
19 Correct 962 ms 95840 KB Output is correct
20 Correct 998 ms 96064 KB Output is correct
21 Correct 803 ms 82004 KB Output is correct
22 Correct 101 ms 10208 KB Output is correct
23 Correct 208 ms 11728 KB Output is correct
24 Correct 48 ms 10208 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 504 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 8 ms 1360 KB Output is correct
8 Correct 8 ms 1360 KB Output is correct
9 Correct 8 ms 1360 KB Output is correct
10 Correct 6 ms 848 KB Output is correct
11 Correct 4 ms 796 KB Output is correct
12 Correct 3 ms 592 KB Output is correct
13 Correct 8 ms 1364 KB Output is correct
14 Correct 9 ms 1360 KB Output is correct
15 Correct 11 ms 1360 KB Output is correct
16 Correct 4 ms 848 KB Output is correct
17 Correct 6 ms 976 KB Output is correct
18 Correct 2 ms 592 KB Output is correct
19 Correct 1064 ms 95436 KB Output is correct
20 Correct 1055 ms 96776 KB Output is correct
21 Correct 1128 ms 97144 KB Output is correct
22 Correct 283 ms 12760 KB Output is correct
23 Correct 146 ms 10208 KB Output is correct
24 Correct 65 ms 10208 KB Output is correct
25 Correct 1274 ms 76220 KB Output is correct
26 Correct 512 ms 77004 KB Output is correct
27 Correct 532 ms 61904 KB Output is correct
28 Correct 99 ms 10208 KB Output is correct
29 Correct 226 ms 11984 KB Output is correct
30 Correct 49 ms 10208 KB Output is correct
31 Correct 992 ms 96072 KB Output is correct
32 Correct 1002 ms 96048 KB Output is correct
33 Correct 972 ms 95604 KB Output is correct
34 Correct 232 ms 13260 KB Output is correct
35 Correct 147 ms 11512 KB Output is correct
36 Correct 76 ms 10208 KB Output is correct
37 Correct 962 ms 95840 KB Output is correct
38 Correct 998 ms 96064 KB Output is correct
39 Correct 803 ms 82004 KB Output is correct
40 Correct 101 ms 10208 KB Output is correct
41 Correct 208 ms 11728 KB Output is correct
42 Correct 48 ms 10208 KB Output is correct
43 Runtime error 551 ms 481164 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -