Submission #667987

#	Time	Username	Problem	Language	Result	Execution time	Memory
667987		bashkort	Lightning Rod (NOI18_lightningrod)	C++17	80 / 100	2029 ms	246556 KiB

Main

#include <bits/stdc++.h>

using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n;
    cin >> n;

    vector<pair<int, int>> p(n);
    for (int i = 0; i < n; ++i) {
        int a, b;
        cin >> a >> b;
        p[i].first = a + b, p[i].second = b - a;
    }

    sort(p.begin(), p.end(), greater());

    int mx = -1e9;
    int ans = 0;
    for (auto [x, y] : p) {
        if (mx < y) {
            mx = y;
            ans += 1;
        }
    }

    cout << ans << '\n';

    return 0;
}

• 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