Submission #1074590

#	Time	Username	Problem	Language	Result	Execution time	Memory
1074590		NoLove	Exhibition (JOI19_ho_t2)	C++14	100 / 100	49 ms	5856 KiB

joi2019_ho_t2

/**
 *    author : Lăng Trọng Đạt
 *    created: 2024-08-25
**/
#include <bits/stdc++.h>
using namespace std;
#ifndef LANG_DAT
#define db(...) ;
#endif // LANG_DAT
#define int long long
#define mp make_pair
#define f first
#define se second
#define pb push_back
#define all(v) (v).begin(), (v).end()
using pii = pair<int, int>;
using vi = vector<int>;
#define FOR(i, a, b) for (int i = a; (i) <= (b); i++)
void mx(int& a, int b) { if (b > a) a = b; }
void mi(int& a, int b) { if (b < a) a = b; }
#define si(x) (int)(x.size())
const int INF = 1e18;
const int MOD = 1e9 + 7;

const int N = 1e5 + 5;
int w[N];
int n, m, k, a, b;
vector<pii> pic;


int32_t main() {
    cin.tie(0)->sync_with_stdio(0);
    if (fopen("hi.inp", "r")) {
        freopen("hi.inp", "r", stdin);
//        freopen("hi.out", "w", stdout);
    }

    cin >> n >> m;
    pic.resize(n);
    for (auto&[v, s] : pic) cin >> s >> v;
    FOR(i, 1, m) {
        cin >> w[i];
    }
    db(pic)
    sort(all(pic), greater<pii>());
    sort(w + 1, w + m + 1, greater<int>());

    int ans = 0, pos = 0;

    FOR(i, 1, m) {
        db(pos, pic[pos], w[i])
        while (pos < n && pic[pos].se > w[i]) pos++;
        if (pos == n) break;
        pos++;
        ans++;
    }

    cout << ans;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int32_t main()':
joi2019_ho_t2.cpp:40:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   40 |     for (auto&[v, s] : pic) cin >> s >> v;
      |               ^
joi2019_ho_t2.cpp:34:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |         freopen("hi.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

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