Submission #1101253

#	Time	Username	Problem	Language	Result	Execution time	Memory
1101253		andro	Sails (IOI07_sails)	C++14	30 / 100	1068 ms	5696 KiB

sails

#include <bits/stdc++.h>

#define int long long

using namespace std;

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<pair<int,int>> a(n + 1);
    for(int i = 1; i <= n; i++) {
        cin >> a[i].first >> a[i].second;
    }
    sort(a.begin() + 1, a.end());
    vector<int> cnt(n + 1, 0);
    for(int i = 1; i <= n; i++) {
        vector<pair<int,int>> upd;
        for(int j = 1; j <= a[i].first; j++) {
            upd.push_back({cnt[j], j});
        }
        sort(upd.begin(), upd.end());
        for(int j = 0; j < a[i].second; j++) {
            cnt[upd[j].second] += 1;
        }
    }
    int ans = 0;
    for(int i = 1; i <= n; i++) {
        ans += cnt[i] * (cnt[i] - 1);
    }
    ans /= 2;
    cout << ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 5 / 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