Submission #1063846

#	Time	Username	Problem	Language	Result	Execution time	Memory
1063846		Luvidi	Lightning Rod (NOI18_lightningrod)	C++17	80 / 100	2008 ms	246496 KiB

Main

#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].fs>>a[i].sc;
        a[i]={a[i].fs-a[i].sc,-a[i].fs-a[i].sc};
    }
    sort(a,a+n);
    int cnt=0,last=2e9;
    for(int i=0;i<n;i++){
        if(a[i].sc<last){
            cnt++;
            last=a[i].sc;
        }
    }
    cout<<cnt;
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    solve();
}

• Subtask 1: 4 / 4
• Subtask 2: 7 / 7
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 26 / 26
• Subtask 6: 10 / 10
• Subtask 7: 0 / 20