Submission #934341

#	Time	Username	Problem	Language	Result	Execution time	Memory
934341		thinknoexit	Sails (IOI07_sails)	C++17	5 / 100	20 ms	3144 KiB

sails

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
pair<int, int> a[100100];
ll qs[100100];
int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    int n;
    cin >> n;
    for (int i = 1;i <= n;i++) {
        cin >> a[i].first >> a[i].second;
    }
    sort(a + 1, a + 1 + n, greater<pair<int, int>>());
    int now = 100000;
    for (int i = 1;i <= n;i++) {
        now = min(now, a[i].first);
        int k = a[i].second;
        if (k > now) {
            qs[1]++;
            qs[now + 1]--;
            k -= now;
            now = a[i].first;
        }
        qs[now + 1]--;
        qs[now - k + 1]++;
        now -= k;
    }
    ll ans = 0;
    for (int i = 1;i <= 100000;i++) {
        qs[i] += qs[i - 1];
        ans += qs[i] * (qs[i] - 1) / 2;
    }
    cout << ans;
    return 0;
}

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