Submission #518558

#	Time	Username	Problem	Language	Result	Execution time	Memory
518558		blue	Sails (IOI07_sails)	C++17	30 / 100	1093 ms	2420 KiB

sails

#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;

using pii = pair<int, int>;
using vi = vector<int>;
using ll = long long;

#define sz(x) int(x.size())

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int N;
    cin >> N;

    pii S[N];
    for(int i = 0; i < N; i++) cin >> S[i].first >> S[i].second;

    sort(S, S+N);

    vi locs;

    for(pii& s: S)
    {
        // cerr << s.first << ' ' << s.second << '\n';
        while(sz(locs) < s.first) locs.push_back(0);

        // while(s.second--)
        // {
        //     locs[0]++;
        // }
        sort(locs.begin(), locs.end());
        for(int i = 0; i < s.second; i++) locs[i]++;
    }

    ll ans = 0;
    for(ll l: locs)
    {
        // cerr << l << '\n';
        ans += ((l)*(l-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