oj.uz

Submission #508592

# Submission time Handle Problem Language Result Execution time Memory
508592 2022-01-13T12:39:44 Z 79brue None (JOI16_matryoshka) C++14
100 / 100
 303 ms 17356 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

struct Query{
    int x, y, idx;
    Query(){}
    Query(int x, int y, int idx): x(x), y(y), idx(idx){}

    bool operator<(const Query &r)const{
        return y!=r.y ? y<r.y : x<r.x;
    }
};

struct Fenwick {
    int tree[1000002];
    int n = 1000000;

    void add(int x, int v){
        while(x<=n){
            tree[x] += v;
            x += x&-x;
        }
    }

    int sum(int x){
        int ret=0;
        while(x){
            ret += tree[x];
            x -= x&-x;
        }
        return ret;
    }
} tree;

int n, q;
pair<int, int> arr[200002];
Query query[200002];
set<pair<int, int> > st;
int ans[200002];

void renumber(){
    vector<int> vec;
    for(int i=1; i<=n; i++) vec.push_back(arr[i].first);
    for(int i=1; i<=q; i++) vec.push_back(query[i].x);
    sort(vec.begin(), vec.end());
    vec.erase(unique(vec.begin(), vec.end()), vec.end());
    for(int i=1; i<=n; i++) arr[i].first = lower_bound(vec.begin(), vec.end(), arr[i].first) - vec.begin() + 1;
    for(int i=1; i<=q; i++) query[i].x = lower_bound(vec.begin(), vec.end(), query[i].x) - vec.begin() + 1;
}

int main(){
    scanf("%d %d", &n, &q);
    for(int i=1; i<=n; i++){
        scanf("%d %d", &arr[i].first, &arr[i].second);
    }
    for(int i=1; i<=q; i++){
        scanf("%d %d", &query[i].x, &query[i].y);
        query[i].idx = i;
    }
    renumber();
    sort(arr+1, arr+n+1, [&](pair<int, int> x, pair<int, int> y){
        return x.second != y.second ? x.second < y.second : x.first > y.first;
    });
    sort(query+1, query+q+1);

    int pnt = 1;
    for(int i=1; i<=q; i++){
        while(pnt <= n && query[i].y >= arr[pnt].second){
            tree.add(arr[pnt].first, 1);

            auto it = st.lower_bound(make_pair(arr[pnt].first, -1));
            if(it == st.begin()){
                st.insert(make_pair(arr[pnt].first, pnt));
                pnt++;
                continue;
            }
            --it;
            tree.add(it->first, -1);
            st.insert(make_pair(arr[pnt].first, pnt));
            st.erase(it);
            ++pnt;
        }

        ans[query[i].idx] = tree.sum(1000000) - tree.sum(query[i].x - 1);
    }

    for(int i=1; i<=q; i++) printf("%d\n", ans[i]);
}

Compilation message

matryoshka.cpp: In function 'int main()':
matryoshka.cpp:55:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |     scanf("%d %d", &n, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~
matryoshka.cpp:57:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |         scanf("%d %d", &arr[i].first, &arr[i].second);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
matryoshka.cpp:60:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |         scanf("%d %d", &query[i].x, &query[i].y);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 312 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 312 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 316 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 312 KB Output is correct
15 Correct 0 ms 312 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 308 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 312 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 316 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 312 KB Output is correct
15 Correct 0 ms 312 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 308 KB Output is correct
21 Correct 0 ms 312 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 2 ms 460 KB Output is correct
24 Correct 3 ms 460 KB Output is correct
25 Correct 2 ms 448 KB Output is correct
26 Correct 3 ms 460 KB Output is correct
27 Correct 3 ms 460 KB Output is correct
28 Correct 3 ms 460 KB Output is correct
29 Correct 2 ms 576 KB Output is correct
30 Correct 2 ms 460 KB Output is correct
31 Correct 3 ms 456 KB Output is correct
32 Correct 3 ms 444 KB Output is correct
33 Correct 3 ms 460 KB Output is correct
34 Correct 3 ms 460 KB Output is correct
35 Correct 2 ms 448 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 312 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 316 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 312 KB Output is correct
15 Correct 0 ms 312 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 1 ms 308 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 308 KB Output is correct
21 Correct 0 ms 312 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 2 ms 460 KB Output is correct
24 Correct 3 ms 460 KB Output is correct
25 Correct 2 ms 448 KB Output is correct
26 Correct 3 ms 460 KB Output is correct
27 Correct 3 ms 460 KB Output is correct
28 Correct 3 ms 460 KB Output is correct
29 Correct 2 ms 576 KB Output is correct
30 Correct 2 ms 460 KB Output is correct
31 Correct 3 ms 456 KB Output is correct
32 Correct 3 ms 444 KB Output is correct
33 Correct 3 ms 460 KB Output is correct
34 Correct 3 ms 460 KB Output is correct
35 Correct 2 ms 448 KB Output is correct
36 Correct 264 ms 11828 KB Output is correct
37 Correct 246 ms 11832 KB Output is correct
38 Correct 89 ms 5168 KB Output is correct
39 Correct 207 ms 9344 KB Output is correct
40 Correct 198 ms 10312 KB Output is correct
41 Correct 263 ms 11120 KB Output is correct
42 Correct 158 ms 9628 KB Output is correct
43 Correct 157 ms 17356 KB Output is correct
44 Correct 276 ms 15124 KB Output is correct
45 Correct 285 ms 15128 KB Output is correct
46 Correct 261 ms 15132 KB Output is correct
47 Correct 273 ms 14904 KB Output is correct
48 Correct 303 ms 15616 KB Output is correct
49 Correct 257 ms 14876 KB Output is correct
50 Correct 276 ms 15576 KB Output is correct