oj.uz

Submission #715244

# Submission time Handle Problem Language Result Execution time Memory
715244 2023-03-26T09:10:43 Z aykhn Examination (JOI19_examination) C++14
100 / 100
 1796 ms 350012 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
 
#define OPT ios_base::sync_with_stdio(0); \
            cin.tie(0); \
            cout.tie(0)
 
#define pii pair<int,int>
#define pll pair<ll,ll>
#define endl "\n"
#define all(v) v.begin(), v.end()
#define mpr make_pair
#define pb push_back
#define ts to_string
#define fi first
#define se second
#define inf 0x3F3F3F3F
#define bpc __builtin_popcount
#define print(v) for(int i = 0; i < v.size(); i++) \
                    cout << v[i] << " "; \
                    cout<<endl;
 
struct MTree
{
    int size;
    vector<vector<int>> tree;
 
    void init(int n)
    {
        size = 1;
 
        while (size < n) size *= 2;
 
        tree.resize(2*size);
    }
 
    void merge(vector<int> &a, vector<int> &b, vector<int> &f)
    {
        int i = 0;
        int j = 0;
 
        while (i < a.size() && j < b.size())
        {
            if (a[i] <= b[j])
            {
                f.pb(a[i]);
                i++;
            }
            else
            {
                f.pb(b[j]);
                j++;
            }
        }
 
        while (i < a.size())
        {
            f.pb(a[i]);
            i++;
        }
 
        while (j < b.size())
        {
            f.pb(b[j]);
            j++;
        }
    }
 
    void _build(int l, int r, int x, vector<pii> &arr)
    {
        if (l == r) return;
        if (l + 1 == r)
        {
            if (l >= arr.size()) tree[x].pb(inf);
            else tree[x].pb(arr[l].se);
            return;
        }
 
        int mid = (l + r) >> 1;
 
        _build(l, mid, 2*x+1, arr);
        _build(mid, r, 2*x+2, arr);
 
        merge(tree[2*x+1], tree[2*x+2], tree[x]);
    }
 
    void build(vector<pii> &arr)
    {
        _build(0, size, 0, arr);
    }
 
    int get(int lx, int rx, int l, int r, int x, int val)
    {
        if (l >= rx || r <= lx) return 0;
 
        if (l >= lx && r <= rx)
        {
            return lower_bound(tree[x].begin(), tree[x].end(), val) - tree[x].begin();
        }
 
        int mid = (l + r) >> 1;
 
        return get(lx, rx, l, mid, 2*x+1, val) + get(lx, rx, mid, r, 2*x+2, val);
    }
 
    int get(int l, int r, int val)
    {
        return get(l, r, 0, size, 0, val);
    }
};
 
struct MergeTree
{
    int size;
    vector<vector<pii>> tree;
    vector<MTree> sub;
 
    void init(int &n)
    {
        size = 1;
 
        while (size < n) size *= 2;
 
        tree.resize(2*size);
        sub.resize(2*size);
    }
 
    void merge(vector<pii> &a, vector<pii> &b, vector<pii> &f)
    {
        int i = 0;
        int j = 0;
 
        while (i < a.size() && j < b.size())
        {
            if (a[i].fi <= b[j].fi)
            {
                f.pb(a[i]);
                i++;
            }
            else
            {
                f.pb(b[j]);
                j++;
            }
        }
 
        while (i < a.size())
        {
            f.pb(a[i]);
            i++;
        }
 
        while (j < b.size())
        {
            f.pb(b[j]);
            j++;
        }
    }
 
    void _build(int l, int r, int x, vector<pii> &arr)
    {
        if (l == r) return;
        if (l + 1 == r)
        {
            if (l >= arr.size())
            {
                tree[x].pb(mpr(inf, inf));
                sub[x].init(tree[x].size());
                sub[x].build(tree[x]);
            }
            else
            {
                tree[x].pb(arr[l]);
                sub[x].init(tree[x].size());
                sub[x].build(tree[x]);
            }
            return;
        }
 
        int mid = (l + r) >> 1;
 
        _build(l, mid, 2*x+1, arr);
        _build(mid, r, 2*x+2, arr);
 
        merge(tree[2*x+1], tree[2*x+2], tree[x]);
        sub[x].init(tree[x].size());
        sub[x].build(tree[x]);
    }
 
    void build(vector<pii> &arr)
    {
        _build(0, size, 0, arr);
    }
 
    int get(int lx, int rx, int l, int r, int x, pii val)
    {
        if (l >= rx || r <= lx) return 0;
        if (l >= lx && r <= rx)
        {
            int ind = lower_bound(tree[x].begin(), tree[x].end(), mpr(val.fi, 0)) - tree[x].begin();
            return sub[x].get(ind, tree[x].size(), val.se) + ind;
        }
 
        int mid = (l + r) >> 1;
 
        return get(lx, rx, l, mid, 2*x+1, val) + get(lx, rx, mid, r, 2*x+2, val);
    }
 
    int get(int l, int r, pii val)
    {
        return get(l, r, 0, size, 0, val);
    }
};
 
int n;
 
int main()
{
    int q;
    cin >> n >> q;
 
    vector<pii> v(n);
 
    for (int i = 0; i < n; i++)
    {
        cin >> v[i].fi >> v[i].se;
    }
 
 
 
    sort(all(v));
 
    vector<pii> arr;
 
    for (int i = 0; i < n; i++)
    {
        arr.pb(mpr(v[i].se, v[i].fi + v[i].se));
    }
 
    MergeTree st;
 
    st.init(n);
    st.build(arr);
 
    while (q--)
    {
        int a, b, c;
        cin >> a >> b >> c;
 
        int ind = lower_bound(v.begin(), v.end(), mpr(a, b)) - v.begin();
 
      	int rem = n - ind;

      	rem -= st.get(ind, n, mpr(b, c));

      	cout << rem << endl;
    }
}

Compilation message

examination.cpp: In member function 'void MTree::merge(std::vector<int>&, std::vector<int>&, std::vector<int>&)':
examination.cpp:45:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         while (i < a.size() && j < b.size())
      |                ~~^~~~~~~~~~
examination.cpp:45:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         while (i < a.size() && j < b.size())
      |                                ~~^~~~~~~~~~
examination.cpp:59:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |         while (i < a.size())
      |                ~~^~~~~~~~~~
examination.cpp:65:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |         while (j < b.size())
      |                ~~^~~~~~~~~~
examination.cpp: In member function 'void MTree::_build(int, int, int, std::vector<std::pair<int, int> >&)':
examination.cpp:77:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |             if (l >= arr.size()) tree[x].pb(inf);
      |                 ~~^~~~~~~~~~~~~
examination.cpp: In member function 'void MergeTree::merge(std::vector<std::pair<int, int> >&, std::vector<std::pair<int, int> >&, std::vector<std::pair<int, int> >&)':
examination.cpp:136:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |         while (i < a.size() && j < b.size())
      |                ~~^~~~~~~~~~
examination.cpp:136:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  136 |         while (i < a.size() && j < b.size())
      |                                ~~^~~~~~~~~~
examination.cpp:150:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  150 |         while (i < a.size())
      |                ~~^~~~~~~~~~
examination.cpp:156:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  156 |         while (j < b.size())
      |                ~~^~~~~~~~~~
examination.cpp: In member function 'void MergeTree::_build(int, int, int, std::vector<std::pair<int, int> >&)':
examination.cpp:168:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  168 |             if (l >= arr.size())
      |                 ~~^~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 244 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 31 ms 7740 KB Output is correct
8 Correct 30 ms 7764 KB Output is correct
9 Correct 32 ms 7764 KB Output is correct
10 Correct 29 ms 7764 KB Output is correct
11 Correct 27 ms 7864 KB Output is correct
12 Correct 24 ms 7764 KB Output is correct
13 Correct 31 ms 7824 KB Output is correct
14 Correct 29 ms 7764 KB Output is correct
15 Correct 30 ms 7860 KB Output is correct
16 Correct 24 ms 7764 KB Output is correct
17 Correct 31 ms 7928 KB Output is correct
18 Correct 20 ms 7836 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1678 ms 349836 KB Output is correct
2 Correct 1629 ms 349868 KB Output is correct
3 Correct 1639 ms 349852 KB Output is correct
4 Correct 1415 ms 349776 KB Output is correct
5 Correct 1291 ms 349792 KB Output is correct
6 Correct 1106 ms 349824 KB Output is correct
7 Correct 1563 ms 349736 KB Output is correct
8 Correct 1512 ms 349904 KB Output is correct
9 Correct 1398 ms 349940 KB Output is correct
10 Correct 1044 ms 349544 KB Output is correct
11 Correct 1290 ms 349588 KB Output is correct
12 Correct 1119 ms 349492 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1678 ms 349836 KB Output is correct
2 Correct 1629 ms 349868 KB Output is correct
3 Correct 1639 ms 349852 KB Output is correct
4 Correct 1415 ms 349776 KB Output is correct
5 Correct 1291 ms 349792 KB Output is correct
6 Correct 1106 ms 349824 KB Output is correct
7 Correct 1563 ms 349736 KB Output is correct
8 Correct 1512 ms 349904 KB Output is correct
9 Correct 1398 ms 349940 KB Output is correct
10 Correct 1044 ms 349544 KB Output is correct
11 Correct 1290 ms 349588 KB Output is correct
12 Correct 1119 ms 349492 KB Output is correct
13 Correct 1796 ms 349820 KB Output is correct
14 Correct 1649 ms 349900 KB Output is correct
15 Correct 1579 ms 349888 KB Output is correct
16 Correct 1452 ms 349768 KB Output is correct
17 Correct 1357 ms 349840 KB Output is correct
18 Correct 1126 ms 349980 KB Output is correct
19 Correct 1707 ms 349792 KB Output is correct
20 Correct 1715 ms 349860 KB Output is correct
21 Correct 1696 ms 350012 KB Output is correct
22 Correct 1112 ms 349624 KB Output is correct
23 Correct 1123 ms 349528 KB Output is correct
24 Correct 971 ms 349444 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 244 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 31 ms 7740 KB Output is correct
8 Correct 30 ms 7764 KB Output is correct
9 Correct 32 ms 7764 KB Output is correct
10 Correct 29 ms 7764 KB Output is correct
11 Correct 27 ms 7864 KB Output is correct
12 Correct 24 ms 7764 KB Output is correct
13 Correct 31 ms 7824 KB Output is correct
14 Correct 29 ms 7764 KB Output is correct
15 Correct 30 ms 7860 KB Output is correct
16 Correct 24 ms 7764 KB Output is correct
17 Correct 31 ms 7928 KB Output is correct
18 Correct 20 ms 7836 KB Output is correct
19 Correct 1678 ms 349836 KB Output is correct
20 Correct 1629 ms 349868 KB Output is correct
21 Correct 1639 ms 349852 KB Output is correct
22 Correct 1415 ms 349776 KB Output is correct
23 Correct 1291 ms 349792 KB Output is correct
24 Correct 1106 ms 349824 KB Output is correct
25 Correct 1563 ms 349736 KB Output is correct
26 Correct 1512 ms 349904 KB Output is correct
27 Correct 1398 ms 349940 KB Output is correct
28 Correct 1044 ms 349544 KB Output is correct
29 Correct 1290 ms 349588 KB Output is correct
30 Correct 1119 ms 349492 KB Output is correct
31 Correct 1796 ms 349820 KB Output is correct
32 Correct 1649 ms 349900 KB Output is correct
33 Correct 1579 ms 349888 KB Output is correct
34 Correct 1452 ms 349768 KB Output is correct
35 Correct 1357 ms 349840 KB Output is correct
36 Correct 1126 ms 349980 KB Output is correct
37 Correct 1707 ms 349792 KB Output is correct
38 Correct 1715 ms 349860 KB Output is correct
39 Correct 1696 ms 350012 KB Output is correct
40 Correct 1112 ms 349624 KB Output is correct
41 Correct 1123 ms 349528 KB Output is correct
42 Correct 971 ms 349444 KB Output is correct
43 Correct 1763 ms 349816 KB Output is correct
44 Correct 1793 ms 349764 KB Output is correct
45 Correct 1737 ms 349796 KB Output is correct
46 Correct 1499 ms 349748 KB Output is correct
47 Correct 1413 ms 349792 KB Output is correct
48 Correct 1164 ms 349544 KB Output is correct
49 Correct 1779 ms 349760 KB Output is correct
50 Correct 1677 ms 349676 KB Output is correct
51 Correct 1733 ms 349784 KB Output is correct
52 Correct 1204 ms 349568 KB Output is correct
53 Correct 1203 ms 349616 KB Output is correct