Submission #1281268

#	Time	Username	Problem	Language	Result	Execution time	Memory
1281268		flo	Exhibition (JOI19_ho_t2)	C++20	100 / 100	39 ms	2920 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
#define task "testing"
#define int long long
#define multitest 0
using namespace std;

const int N = 1e5;

int c[N+5];

pair<int, int> a[N+5];

void flo(int ID) {
	int n, m; cin >> n >> m;
	
	for (int x = 1; x <= n; x++) {
		cin >> a[x].second >> a[x].first;
	}
	
	sort(a+1, a+n+1);
	
	for (int x = 1; x <= m; x++) cin >> c[x];
	
	sort(c+1, c+m+1, greater<int>());
	
	int cnt = 1;
	
	for (int x = n; x >= 1 && cnt <= m; x--) {
		if (a[x].second <= c[cnt]) cnt++;
	}
	
	cout << cnt-1 << "\n";
}

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    if (fopen(task".inp", "r")) {
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }

    int TCS = 1, ID = 1;

    if (multitest) {
        cin >> TCS;
    }

    while (TCS--) flo(ID++);

    return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:40:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:41:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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