제출 #1033968

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1033968		vjudge1	Exhibition (JOI19_ho_t2)	C++17	0 / 100	1 ms	4560 KiB

joi2019_ho_t2

#include<bits/stdc++.h>
#define ll long long
#define pll pair<ll, ll>
#define fi first
#define se second
using namespace std;

int n, m;
const int maxn = 2e6;
const int inf = 1e9;
pll p[maxn + 3];
ll c[maxn + 3], ans;
bool vis[maxn + 3];

bool cmp(pll a, pll b)
{
    if(a.se == b.se) return a.fi < b.fi;
    return a.se < b.se;
}

int main()
{
   // freopen("EXHIBITION.INP", "r", stdin);
  //  freopen("EXHIBITION.OUT", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    cin >> n >> m;
    for(int i = 1; i <= n; i++)
    {
        cin >> p[i].fi >> p[i].se;
    }
    sort(p + 1, p + n + 1, cmp);
    for(int i = 1; i <= m; i++)
    {
        cin >> c[i];
    }
    sort(c + 1, c + n + 1);
    ll tmp = inf;
    for(int i = n; i >= 1; i--)
    {
        int l = 1, r = m, res = 0, mid = 0;
        while(l <= r)
        {
            mid = (l + r) / 2;
            if(c[mid] >= p[i].fi && !vis[mid] && tmp >= c[mid])
            {
                l = mid + 1;
                res = mid;
            }
            else l = mid + 1;
        }
        if(res != 0)
        {
            ans ++;
            vis[res] == true;
            tmp = c[res];
        }
    }
    cout << ans;
}

컴파일 시 표준 에러 (stderr) 메시지

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:56:22: warning: statement has no effect [-Wunused-value]
   56 |             vis[res] == true;
      |             ~~~~~~~~~^~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 50