Submission #1292046

#	Time	Username	Problem	Language	Result	Execution time	Memory
1292046		thaibeo123	Exhibition (JOI19_ho_t2)	C++20	10 / 100	1094 ms	592 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
using namespace std;

#define NAME "A"
#define ll long long
#define fi first
#define se second
#define pb push_back
#define all(x) x.begin(), x.end()
#define MASK(x) (1ll << (x))
#define BIT(x, i) (((x) >> (i)) & 1)

const int N = 2e5 + 5;

int n, m;
int s[N], v[N], c[N], id[N];

void input() {
    cin >> n >> m;
    for (int i = 1; i <= n; i++) {
        cin >> s[i] >> v[i];
        id[i] = i;
    }
    for (int i = 1; i <= m; i++) {
        cin >> c[i];
    }
    sort(c + 1, c + 1 + m, greater<>());
}

void solve() {
    int ans = 0;
    do {
        int cur = 0;
        for (int i = 1; i <= n; i++) {
            if (s[id[i]] > c[i]) break;
            if (i >= 2 && v[id[i]] > v[id[i - 1]]) break;
            cur++;
        }
        ans = max(ans, cur);
    }while (next_permutation(id + 1, id + 1 + n));
    cout << ans;
}

signed main() {
    if (fopen(NAME".INP", "r")) {
        freopen(NAME".INP", "r", stdin);
        freopen(NAME".OUT", "w", stdout);
    }
    cin.tie(0)->sync_with_stdio(0);

    int t = 1;
    //cin >> t;
    while (t--) {
        input();
        solve();
    }

    return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:46:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |         freopen(NAME".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:47:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |         freopen(NAME".OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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