Submission #1300573

#	Time	Username	Problem	Language	Result	Execution time	Memory
1300573		danglayloi1	Lightning Rod (NOI18_lightningrod)	C++20	21 / 100	936 ms	78252 KiB

Main

#include <bits/stdc++.h>
#define ii pair<int, int>
#define fi first
#define se second
#define inf 0x3f3f3f3f3f3f3f3f
using namespace std;
using ll = long long;
const ll mod=1e9+7;
const int nx=1e7+5;
int n, ans=0, cur=-1;
ii a[nx];
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n;
    for(int i = 1; i <= n; i++)
    {
        cin>>a[i].fi>>a[i].se;
        if(cur==-1)
        {
            ans++;
            cur=i;
            continue;
        }
        if(a[i].fi-a[cur].fi<=a[i].se-a[cur].se)
            cur=i;
        else if(a[i].fi-a[cur].fi>a[cur].se-a[i].se)
            ans++, cur=i;
    }
    cout<<ans;
}

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