Submission #743792

#	Time	Username	Problem	Language	Result	Execution time	Memory
743792		vjudge1	Lightning Rod (NOI18_lightningrod)	C++17	11 / 100	1434 ms	82880 KiB

Main

#include <bits/stdc++.h>
#define x first
#define y second
using namespace std;
stack<pair<int,int>> st;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    int n; cin >> n;
    while (n--) {
        int a,b; cin >> a >> b;
        while (!st.empty() && abs(a - st.top().x) <= abs(b - st.top().y)) st.pop();
        if (st.empty() || (!st.empty() && abs(a - st.top().x) > abs(b - st.top().y))) st.push({a, b});
    }
    cout << st.size();
    return 0;
}

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