Submission #937560

#	Time	Username	Problem	Language	Result	Execution time	Memory
937560		danikoynov	팀들 (IOI15_teams)	C++14	0 / 100	4078 ms	32564 KiB

teams

#include "teams.h"
#include <bits/stdc++.h>
using namespace std;
const int maxn = 5e5 + 10;

struct segment
{
    int l, r;

    segment(int _l = 0, int _r = 0)
    {
        l = _l;
        r = _r;
    }
};

int n;
segment s[maxn];
void init(int N, int A[], int B[])
{
    n = N;
    for (int i = 1; i <= n; i ++)
        s[i] = A[i - 1];
}

struct event
{
    int x, t, id;

    event(int _x = 0, int _t = 0, int _id = 0)
    {
        x = _x;
        t = _t;
        id = _id;
    }

};

bool cmp_event(event e1, event e2)
{
    if (e1.x != e2.x)
        return e1.x < e2.x;
    return e1.t < e2.t;
}

int can(int M, int K[])
{
    vector < event > events;
    for (int i = 0; i < M; i ++)
    {
        events.push_back(event(K[i], 0, -1));
    }
    for (int i = 1; i <= n; i ++)
    {
        events.push_back(event(s[i].l, -1, i));
        events.push_back(event(s[i].r, 1, i));
    }

    sort(events.begin(), events.end(), cmp_event);

    set < pair < int, int > > act;
    for (event cur : events)
    {
        if (cur.t == -1)
        {
            act.insert({s[cur.id].r, cur.id});
        }
        else
        if (cur.t == 1)
        {
            if (act.find({s[cur.id].r, cur.id}) != act.end())
            {
                return 0;
                act.erase({s[cur.id].r, cur.id});
            }
        }
        else
        {
            if (act.size() < cur.x)
            {
                return 0;
            }
            for (int d = 0; d < cur.x; d ++)
                act.erase(act.begin());
        }
    }
    return 1;
}

Compilation message (stderr)

teams.cpp: In function 'void init(int, int*, int*)':
teams.cpp:19:31: warning: unused parameter 'B' [-Wunused-parameter]
   19 | void init(int N, int A[], int B[])
      |                           ~~~~^~~
teams.cpp: In function 'int can(int, int*)':
teams.cpp:79:28: warning: comparison of integer expressions of different signedness: 'std::set<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   79 |             if (act.size() < cur.x)
      |                 ~~~~~~~~~~~^~~~~~~

• Subtask 1: 0 / 21
• Subtask 2: 0 / 13
• Subtask 3: 0 / 43
• Subtask 4: 0 / 23