Submission #282548

#	Time	Username	Problem	Language	Result	Execution time	Memory
282548		SamAnd	팀들 (IOI15_teams)	C++17	34 / 100	4067 ms	38648 KiB

teams

#include "teams.h"
#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define fi first
#define se second
typedef long long ll;
const int N = 500005;

struct ban
{
    int l, r;
};
bool operator<(const ban& a, const ban& b)
{
    return a.l < b.l;
}

int n;
ban a[N];

void init(int N_, int A[], int B[])
{
    n = N_;
    for (int i = 0; i < n; ++i)
    {
        a[i].l = A[i];
        a[i].r = B[i];
    }
    sort(a, a + n);
}

int m;
int b[N];

int can(int M_, int K[])
{
    m = M_;
    for (int i = 0; i < m; ++i)
        b[i] = K[i];
    sort(b, b + m);
    ll sum = 0;
    for (int i = 0; i < m; ++i)
        sum += b[i];
    if (sum > n)
        return 0;

    multiset<int> s;
    int j = 0;
    for (int i = 0; i < m; ++i)
    {
        while (j < n && a[j].l <= b[i])
            s.insert(a[j++].r);
        while (!s.empty() && *s.begin() < b[i])
            s.erase(s.begin());
        if (sz(s) < b[i])
            return 0;
        for (int j = 0; j < b[i]; ++j)
            s.erase(s.begin());
    }
    return 1;
}

Compilation message (stderr)

teams.cpp: In function 'int can(int, int*)':
teams.cpp:60:18: warning: declaration of 'j' shadows a previous local [-Wshadow]
   60 |         for (int j = 0; j < b[i]; ++j)
      |                  ^
teams.cpp:51:9: note: shadowed declaration is here
   51 |     int j = 0;
      |         ^

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