Submission #797367

#	Time	Username	Problem	Language	Result	Execution time	Memory
797367		n3rm1n	Advertisement 2 (JOI23_ho_t2)	C++17	59 / 100	2073 ms	4196 KiB

Main

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
const int MAXN = 5e5 + 10;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
int n, a[MAXN], b[MAXN];

void read()
{
    cin >> n;
    for (int i = 1; i <= n; ++ i)
    {
        cin >> a[i] >> b[i];

    }
}

int in[MAXN];
void solve()
{

    for (int i = 1; i <= n; ++ i)
    {
        for (int j = 1; j <= n; ++ j)
        {
            if(i != j && b[i] >= b[j] && abs(a[i] - a[j]) <= b[i] - b[j])
            {
                if(a[i] == a[j] && b[i] == b[j] && i > j)continue;
                in[j] ++;
            }

        }
    }
    int ans = 0;
    for (int i = 1; i <= n; ++ i)
        if(!in[i])ans ++;
    cout << ans << endl;
}
int main()
{
    speed();

    read();
    solve();
    return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 23 / 23
• Subtask 3: 36 / 36
• Subtask 4: 0 / 31