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답안 #1037316

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1037316 2024-07-28T13:58:50 Z vjudge1 Examination (JOI19_examination) C++17
100 / 100
 232 ms 21576 KB 
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
// #define int long long
// #define double long double
 
#define endl '\n'
#define fastIO ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
#define setmin(x, y) x = min((x), (y))
#define setmax(x, y) x = max((x), (y))
#define sqr(x) ((x) * (x))
#define fi first
#define se second
#define all(x) x.begin(), x.end()
 
// mt19937 hdp(chrono::high_resolution_clock::now().time_since_epoch().count());
// int rand(int l, int r){return l + ((hdp() % (r - l + 1)) + r - l + 1) % (r - l + 1);}

const int NM = 2e5 + 5;
const int mod = 1e9 + 7;

struct BIT
{
    int b[NM], n = 2e5;
    void upd(int i, int v)
    {
        for (; i <= n; i += i & -i)
            b[i] += v;
    }
    int get(int i)
    {
        int res = 0;
        for (; i; i -= i & -i)
            res += b[i];
        return res;
    }
}bit;

struct o{
    int x, y, z, i, w;
    o(int x, int y, int z, int i, int w) : x(x), y(y), z(z), i(i), w(w){}
};

vector<o> v;
vector<int> ans;


void cdq(int l, int r)
{
    if (l == r)
        return;
    int m = l + r >> 1;
    cdq(l, m);
    cdq(m + 1, r);
    int a = l, b = m + 1, sum = 0;
    vector<pair<int, int>> record;
    vector<o> tmp;
    while (a <= m && b <= r)
    {
        if (v[a].y > v[b].y)
            bit.upd(v[a].z, v[a].w), sum += v[a].w, record.push_back({v[a].z, v[a].w}), tmp.push_back(v[a++]);
        else
            ans[v[b].i] += sum - bit.get(v[b].z), tmp.push_back(v[b++]);
    }
    while (a <= m)
        tmp.push_back(v[a++]);
    while (b <= r)
        ans[v[b].i] += sum - bit.get(v[b].z), tmp.push_back(v[b++]);
    for (int i = l; i <= r; i++)
        v[i] = tmp[i - l];
    for (auto i : record)
        bit.upd(i.fi, -i.se);
    vector<pair<int, int>> ().swap(record);
    vector<o> ().swap(tmp);
}

vector<int> nen;

int mp(int x)
{
    return lower_bound(nen.begin(), nen.end(), x) - nen.begin() + 1;
}

void solve()
{
    int n = v.size();
    sort(v.begin(), v.end(),[&](const o& a, const o& b){return a.x != b.x ? a.x > b.x : (a.y != b.y ? a.y < b.y : a.z < b.z);});
    for (auto t : v)
        nen.push_back(t.z);
    sort(nen.begin(), nen.end());
    nen.erase(unique(nen.begin(), nen.end()), nen.end());
    for (auto& t : v)
        t.z = mp(t.z);
    ans.resize(n);
    cdq(0, n - 1);
}

signed main()
{
    fastIO
    if (fopen("in.txt", "r")) 
    {
        freopen("in.txt", "r", stdin);
        freopen("out.txt", "w", stdout);
    }
    int n, q;
    cin >> n >> q;
    for (int i = 1; i <= n; i++)
    {
        int s, t;
        cin >> s >> t;
        v.emplace_back(s, t, s + t, v.size(), 1);
    }
    for (int i = 1; i <= q; i++)
    {
        int x, y, z;
        cin >> x >> y >> z;
        v.emplace_back(x - 1, y - 1, z - 1, v.size(), 0);
    }
    solve();
    for (int i = n; i < n + q; i++)
        cout << ans[i] << endl;
}

Compilation message

examination.cpp: In function 'void cdq(int, int)':
examination.cpp:53:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   53 |     int m = l + r >> 1;
      |             ~~^~~
examination.cpp: In function 'int main()':
examination.cpp:104:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  104 |         freopen("in.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
examination.cpp:105:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  105 |         freopen("out.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 6 ms 1060 KB Output is correct
8 Correct 6 ms 1060 KB Output is correct
9 Correct 6 ms 1216 KB Output is correct
10 Correct 5 ms 1056 KB Output is correct
11 Correct 4 ms 1056 KB Output is correct
12 Correct 3 ms 852 KB Output is correct
13 Correct 5 ms 1084 KB Output is correct
14 Correct 5 ms 1060 KB Output is correct
15 Correct 5 ms 944 KB Output is correct
16 Correct 4 ms 912 KB Output is correct
17 Correct 5 ms 1048 KB Output is correct
18 Correct 3 ms 828 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 205 ms 19132 KB Output is correct
2 Correct 200 ms 18112 KB Output is correct
3 Correct 193 ms 18344 KB Output is correct
4 Correct 180 ms 17592 KB Output is correct
5 Correct 123 ms 18348 KB Output is correct
6 Correct 81 ms 16824 KB Output is correct
7 Correct 197 ms 17856 KB Output is correct
8 Correct 188 ms 18104 KB Output is correct
9 Correct 181 ms 19028 KB Output is correct
10 Correct 101 ms 17844 KB Output is correct
11 Correct 148 ms 17332 KB Output is correct
12 Correct 74 ms 16712 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 205 ms 19132 KB Output is correct
2 Correct 200 ms 18112 KB Output is correct
3 Correct 193 ms 18344 KB Output is correct
4 Correct 180 ms 17592 KB Output is correct
5 Correct 123 ms 18348 KB Output is correct
6 Correct 81 ms 16824 KB Output is correct
7 Correct 197 ms 17856 KB Output is correct
8 Correct 188 ms 18104 KB Output is correct
9 Correct 181 ms 19028 KB Output is correct
10 Correct 101 ms 17844 KB Output is correct
11 Correct 148 ms 17332 KB Output is correct
12 Correct 74 ms 16712 KB Output is correct
13 Correct 213 ms 18716 KB Output is correct
14 Correct 213 ms 18668 KB Output is correct
15 Correct 199 ms 19088 KB Output is correct
16 Correct 189 ms 18100 KB Output is correct
17 Correct 142 ms 18100 KB Output is correct
18 Correct 91 ms 16312 KB Output is correct
19 Correct 218 ms 18872 KB Output is correct
20 Correct 208 ms 18624 KB Output is correct
21 Correct 211 ms 18872 KB Output is correct
22 Correct 97 ms 18000 KB Output is correct
23 Correct 153 ms 17248 KB Output is correct
24 Correct 71 ms 17400 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 6 ms 1060 KB Output is correct
8 Correct 6 ms 1060 KB Output is correct
9 Correct 6 ms 1216 KB Output is correct
10 Correct 5 ms 1056 KB Output is correct
11 Correct 4 ms 1056 KB Output is correct
12 Correct 3 ms 852 KB Output is correct
13 Correct 5 ms 1084 KB Output is correct
14 Correct 5 ms 1060 KB Output is correct
15 Correct 5 ms 944 KB Output is correct
16 Correct 4 ms 912 KB Output is correct
17 Correct 5 ms 1048 KB Output is correct
18 Correct 3 ms 828 KB Output is correct
19 Correct 205 ms 19132 KB Output is correct
20 Correct 200 ms 18112 KB Output is correct
21 Correct 193 ms 18344 KB Output is correct
22 Correct 180 ms 17592 KB Output is correct
23 Correct 123 ms 18348 KB Output is correct
24 Correct 81 ms 16824 KB Output is correct
25 Correct 197 ms 17856 KB Output is correct
26 Correct 188 ms 18104 KB Output is correct
27 Correct 181 ms 19028 KB Output is correct
28 Correct 101 ms 17844 KB Output is correct
29 Correct 148 ms 17332 KB Output is correct
30 Correct 74 ms 16712 KB Output is correct
31 Correct 213 ms 18716 KB Output is correct
32 Correct 213 ms 18668 KB Output is correct
33 Correct 199 ms 19088 KB Output is correct
34 Correct 189 ms 18100 KB Output is correct
35 Correct 142 ms 18100 KB Output is correct
36 Correct 91 ms 16312 KB Output is correct
37 Correct 218 ms 18872 KB Output is correct
38 Correct 208 ms 18624 KB Output is correct
39 Correct 211 ms 18872 KB Output is correct
40 Correct 97 ms 18000 KB Output is correct
41 Correct 153 ms 17248 KB Output is correct
42 Correct 71 ms 17400 KB Output is correct
43 Correct 229 ms 21172 KB Output is correct
44 Correct 232 ms 21576 KB Output is correct
45 Correct 227 ms 21012 KB Output is correct
46 Correct 194 ms 20144 KB Output is correct
47 Correct 148 ms 19380 KB Output is correct
48 Correct 98 ms 16708 KB Output is correct
49 Correct 223 ms 21432 KB Output is correct
50 Correct 223 ms 21176 KB Output is correct
51 Correct 221 ms 21444 KB Output is correct
52 Correct 137 ms 19856 KB Output is correct
53 Correct 148 ms 18356 KB Output is correct