Submission #957902

#	Time	Username	Problem	Language	Result	Execution time	Memory
957902		aykhn	Exhibition (JOI19_ho_t2)	C++17	100 / 100	45 ms	5808 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
 
using namespace std;
 
#define int long long
#define inf 0x3F3F3F3F
 
vector<int> st;
 
void make(int l, int r, int x, int ind, int val)
{
    if (l + 1 == r)
    {
        st[x] = max(st[x], val);
        return;
    }
    int mid = (l + r) >> 1;
    if (ind < mid) make(l, mid, 2*x + 1, ind, val);
    else make(mid, r, 2*x + 2, ind, val);
    st[x] = max(st[2*x + 1], st[2*x + 2]);
}
int get(int l, int r, int x, int lx, int rx)
{
    if (l >= rx || r <= lx) return 0;
    if (l >= lx && r <= rx) return st[x];
    int mid = (l + r) >> 1;
    return max(get(l, mid, 2*x + 1, lx, rx), get(mid, r, 2*x + 2, lx, rx));
}
 
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(nullptr);
    int n, m, sz = 1;
    cin >> n >> m;
    int b[m];
    array<int, 2> a[n];
    for (array<int, 2> &x : a) cin >> x[1] >> x[0];
    for (int &i : b) cin >> i;
    sort(a, a + n, greater<array<int, 2>> ()), sort(b, b + m);
    int res = 0;
    for (array<int, 2> &x : a)
    {
        if (x[1] <= b[m - res - 1]) 
        {
            res++;
            if (res == m) break;
        }
    }
    cout << res << '\n';
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:34:15: warning: unused variable 'sz' [-Wunused-variable]
   34 |     int n, m, sz = 1;
      |               ^~

• Subtask 1: 10 / 10
• Subtask 2: 40 / 40
• Subtask 3: 50 / 50