oj.uz

Submission #973159

# Submission time Handle Problem Language Result Execution time Memory
973159 2024-05-01T14:52:59 Z the_coding_pooh Examination (JOI19_examination) C++14
100 / 100
 690 ms 134120 KB 
#include <bits/stdc++.h>
#define uwu return 0;

using namespace std;

const int INF = 1e9 + 7, SIZE = 1e5 + 5, LOGC = 400;

struct event{
    int id, a, b, sum;
};

bool cmp(event e1, event e2){
    return e1.sum != e2.sum ? e1.sum > e2.sum : e1.id < e2.id;
}

vector <int> desa, desb;

int getposa(int a){
    return lower_bound(desa.begin(), desa.end(), -a) - desa.begin() + 1;
}

int getposb(int b){
    return lower_bound(desb.begin(), desb.end(), b) - desb.begin();
}

vector <event> vec;

int ptr = 0;

struct node{
    int l, r, val;
} SEGTree[SIZE * LOGC];

int BIT[2 * SIZE];

#define nd SEGTree[rt]
#define lc SEGTree[rt].l
#define rc SEGTree[rt].r

void modify_SEG(int pos, int L, int R, int rt){
    nd.val++;
    if(L == R)
        return;
    
    int M = (L + R) >> 1;
    if(pos <= M){
        if(!lc)
            lc = ++ptr;
        modify_SEG(pos, L, M, lc);
    }
    else{
        if(!rc)
            rc = ++ptr;
        modify_SEG(pos, M + 1, R, rc);
    }
    return;
}

int query_SEG(int ql, int qr, int L, int R, int rt){
    if(!rt)
        return 0;
    if(ql <= L && R <= qr)
        return nd.val;

    int M = (L + R) >> 1;

    if(qr<= M)
        return query_SEG(ql, qr, L, M, lc);
    if(ql > M)
        return query_SEG(ql, qr, M + 1, R, rc);
    return query_SEG(ql, M, L, M, lc) + query_SEG(M + 1, qr, M + 1, R, rc);
}

void modify_BIT(int posa, int posb){
    for (; posa <= desa.size(); posa += (posa &  - posa)){
        if(!BIT[posa])
            BIT[posa] = ++ptr;
        modify_SEG(posb, 0, desb.size(), BIT[posa]);
    }
    return;
}

int query_BIT(int posa, int posb){
    int ret = 0;
    for (; posa; posa -= (posa & - posa)){
        if(BIT[posa]){
            ret += query_SEG(posb, desb.size(), 0, desb.size(), BIT[posa]);
        }
    }
    return ret;
}

int N, Q;

int ans[SIZE];

int main(){
    cin.tie(0), ios::sync_with_stdio(0);
    cin >> N >> Q;

    event in_e;

    for (int i = 0; i < N; i++){
        in_e.id = 0;
        cin >> in_e.a >> in_e.b;
        in_e.sum = in_e.a + in_e.b;
        desa.push_back(-in_e.a);
        desb.push_back(in_e.b);
        vec.push_back(in_e);
    }
    
    for (int i = 0; i < Q; i++){
        in_e.id = i + 1;
        cin >> in_e.a >> in_e.b >> in_e.sum;
        desa.push_back(-in_e.a);
        desb.push_back(in_e.b);
        vec.push_back(in_e);
    }

    sort(desa.begin(), desa.end());
    sort(desb.begin(), desb.end());
    sort(vec.begin(), vec.end(), cmp);

    for(auto i:vec){
        if(i.id){
            ans[i.id] = query_BIT(getposa(i.a), getposb(i.b));
        }
        else{
            modify_BIT(getposa(i.a), getposb(i.b));
        }
    }

    for (int i = 1; i <= Q; i++){
        cout << ans[i] << '\n';
    }

    uwu
}

Compilation message

examination.cpp: In function 'void modify_BIT(int, int)':
examination.cpp:75:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |     for (; posa <= desa.size(); posa += (posa &  - posa)){
      |            ~~~~~^~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 2 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 6 ms 4956 KB Output is correct
8 Correct 7 ms 4956 KB Output is correct
9 Correct 6 ms 4956 KB Output is correct
10 Correct 5 ms 4804 KB Output is correct
11 Correct 5 ms 4952 KB Output is correct
12 Correct 4 ms 2652 KB Output is correct
13 Correct 6 ms 4956 KB Output is correct
14 Correct 6 ms 4956 KB Output is correct
15 Correct 8 ms 4956 KB Output is correct
16 Correct 4 ms 3160 KB Output is correct
17 Correct 4 ms 2908 KB Output is correct
18 Correct 4 ms 2652 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 690 ms 130832 KB Output is correct
2 Correct 637 ms 131396 KB Output is correct
3 Correct 669 ms 131032 KB Output is correct
4 Correct 283 ms 69456 KB Output is correct
5 Correct 239 ms 72628 KB Output is correct
6 Correct 121 ms 11088 KB Output is correct
7 Correct 455 ms 126916 KB Output is correct
8 Correct 428 ms 124928 KB Output is correct
9 Correct 356 ms 118200 KB Output is correct
10 Correct 171 ms 41640 KB Output is correct
11 Correct 138 ms 35616 KB Output is correct
12 Correct 106 ms 10184 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 690 ms 130832 KB Output is correct
2 Correct 637 ms 131396 KB Output is correct
3 Correct 669 ms 131032 KB Output is correct
4 Correct 283 ms 69456 KB Output is correct
5 Correct 239 ms 72628 KB Output is correct
6 Correct 121 ms 11088 KB Output is correct
7 Correct 455 ms 126916 KB Output is correct
8 Correct 428 ms 124928 KB Output is correct
9 Correct 356 ms 118200 KB Output is correct
10 Correct 171 ms 41640 KB Output is correct
11 Correct 138 ms 35616 KB Output is correct
12 Correct 106 ms 10184 KB Output is correct
13 Correct 542 ms 131280 KB Output is correct
14 Correct 647 ms 131200 KB Output is correct
15 Correct 588 ms 130832 KB Output is correct
16 Correct 227 ms 66996 KB Output is correct
17 Correct 215 ms 68904 KB Output is correct
18 Correct 135 ms 10696 KB Output is correct
19 Correct 460 ms 131624 KB Output is correct
20 Correct 578 ms 131156 KB Output is correct
21 Correct 386 ms 127128 KB Output is correct
22 Correct 148 ms 33408 KB Output is correct
23 Correct 143 ms 35416 KB Output is correct
24 Correct 103 ms 10440 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 2 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 6 ms 4956 KB Output is correct
8 Correct 7 ms 4956 KB Output is correct
9 Correct 6 ms 4956 KB Output is correct
10 Correct 5 ms 4804 KB Output is correct
11 Correct 5 ms 4952 KB Output is correct
12 Correct 4 ms 2652 KB Output is correct
13 Correct 6 ms 4956 KB Output is correct
14 Correct 6 ms 4956 KB Output is correct
15 Correct 8 ms 4956 KB Output is correct
16 Correct 4 ms 3160 KB Output is correct
17 Correct 4 ms 2908 KB Output is correct
18 Correct 4 ms 2652 KB Output is correct
19 Correct 690 ms 130832 KB Output is correct
20 Correct 637 ms 131396 KB Output is correct
21 Correct 669 ms 131032 KB Output is correct
22 Correct 283 ms 69456 KB Output is correct
23 Correct 239 ms 72628 KB Output is correct
24 Correct 121 ms 11088 KB Output is correct
25 Correct 455 ms 126916 KB Output is correct
26 Correct 428 ms 124928 KB Output is correct
27 Correct 356 ms 118200 KB Output is correct
28 Correct 171 ms 41640 KB Output is correct
29 Correct 138 ms 35616 KB Output is correct
30 Correct 106 ms 10184 KB Output is correct
31 Correct 542 ms 131280 KB Output is correct
32 Correct 647 ms 131200 KB Output is correct
33 Correct 588 ms 130832 KB Output is correct
34 Correct 227 ms 66996 KB Output is correct
35 Correct 215 ms 68904 KB Output is correct
36 Correct 135 ms 10696 KB Output is correct
37 Correct 460 ms 131624 KB Output is correct
38 Correct 578 ms 131156 KB Output is correct
39 Correct 386 ms 127128 KB Output is correct
40 Correct 148 ms 33408 KB Output is correct
41 Correct 143 ms 35416 KB Output is correct
42 Correct 103 ms 10440 KB Output is correct
43 Correct 532 ms 133240 KB Output is correct
44 Correct 497 ms 133168 KB Output is correct
45 Correct 618 ms 134120 KB Output is correct
46 Correct 246 ms 72076 KB Output is correct
47 Correct 223 ms 78728 KB Output is correct
48 Correct 134 ms 10168 KB Output is correct
49 Correct 466 ms 128952 KB Output is correct
50 Correct 373 ms 129720 KB Output is correct
51 Correct 375 ms 122864 KB Output is correct
52 Correct 194 ms 51368 KB Output is correct
53 Correct 143 ms 43204 KB Output is correct