Submission #838862

#	Time	Username	Problem	Language	Result	Execution time	Memory
838862		fanwen	Pairs (IOI07_pairs)	C++17	30 / 100	17 ms	1620 KiB

pairs

#include <bits/stdc++.h>

using namespace std;

namespace SUB1 {
	void Main() {
		int n, d, m; cin >> n >> d >> m;
		vector <int> a(n);
		for (auto &x : a) cin >> x;
		sort(a.begin(), a.end());
		long long ans = 0;
		for (int i = 1, j = 0; i < n; ++i) {
			while(j < i and a[i] - a[j] > d) j++;
			ans += i - j;
		}
		cout << ans; exit(0);
	}
}

void you_make_it(void) {
    int b; cin >> b;
    if(b == 1) SUB1::Main();
}

signed main() {

#ifdef LOCAL
    freopen("TASK.inp", "r", stdin);
    freopen("TASK.out", "w", stdout);
#endif
    auto start_time = chrono::steady_clock::now();

    cin.tie(0), cout.tie(0) -> sync_with_stdio(0);

    you_make_it();

    auto end_time = chrono::steady_clock::now();

    cerr << "\nExecution time : " << chrono::duration_cast <chrono::milliseconds> (end_time - start_time).count() << "[ms]" << endl;

    return (0 ^ 0);
}

// Dream it. Wish it. Do it.

• Subtask 1: 6 / 6
• Subtask 2: 6 / 6
• Subtask 3: 6 / 6
• Subtask 4: 6 / 6
• Subtask 5: 6 / 6
• Subtask 6: 0 / 7
• Subtask 7: 0 / 7
• Subtask 8: 0 / 8
• Subtask 9: 0 / 8
• Subtask 10: 0 / 10
• Subtask 11: 0 / 10
• Subtask 12: 0 / 10
• Subtask 13: 0 / 10