Submission #1106316

#TimeUsernameProblemLanguageResultExecution timeMemory
1106316LuvidiAdvertisement 2 (JOI23_ho_t2)C++17
59 / 100
2079 ms3832 KiB
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define fs first
#define sc second
#define pb push_back

void solve() {
    int n;
    cin>>n;
    pii a[n];
    for(int i=0;i<n;i++)cin>>a[i].sc>>a[i].fs;
    sort(a,a+n);
    reverse(a,a+n);
    bool vis[n];
    memset(vis,0,sizeof(vis));
    int ans=0;
    for(int i=0;i<n;i++)if(!vis[i]){
        ans++;
        for(int j=i;j<n;j++){
            if(a[i].fs-a[j].fs>=abs(a[i].sc-a[j].sc)){
                vis[j]=1;
            }
        }
    }
    cout<<ans<<'\n';
}

int main() {
    #ifdef FPO
        freopen("in","r",stdin);
        freopen("out","w",stdout);
    #endif
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    solve();
}
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