Submission #1226743

#	Time	Username	Problem	Language	Result	Execution time	Memory
1226743		VMaksimoski008	Sails (IOI07_sails)	C++20	30 / 100	1095 ms	3128 KiB

sails

#include <bits/stdc++.h>
#define ar array
//#define int long long

using namespace std;

using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int mod = 1e9 + 7;
const ll inf = 1e18;
const int N = 1e5 + 5;

signed main() {
    int n; cin >> n;
    vector<ar<int, 2> > a(n+1);
    for(int i=1; i<=n; i++) cin >> a[i][0] >> a[i][1];
    sort(a.begin()+1, a.end());

    ll ans = 0;
    vector<int> cnt(N);
    for(int i=1; i<=n; i++) {
        vector<pii> v;
        for(int j=1; j<=a[i][0]; j++)
            v.push_back({ cnt[j], j });
        sort(v.begin(), v.end());
        for(int k=0; k<a[i][1]; k++)
            cnt[v[k].second]++;
    }

    for(int i=1; i<N; i++)
        ans += (ll)cnt[i] * (cnt[i] - 1) / 2;
    cout << ans << '\n';
}

• 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