Submission #1281542

#	Time	Username	Problem	Language	Result	Execution time	Memory
1281542		KickingKun	Exhibition (JOI19_ho_t2)	C++20	100 / 100	35 ms	1608 KiB

joi2019_ho_t2

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

#define ll long long
#define ull unsigned long long
#define ld long double
#define bigint __int128
#define emb emplace_back
#define pb push_back
#define pii pair <int, int>
#define fi first
#define se second
#define all(v) v.begin(), v.end()
#define Task ""

#define MASK(k) (1ull << k)
#define bitcnt(k) __builtin_popcount(k)
#define testBit(n, k) ((n >> k) & 1)
#define flipBit(n, k) (n ^ (1ll << k))
#define offBit(n, k) (n & ~MASK(k))
#define onBit(n, k) (n | (1ll << k))

template <class T> bool minimize(T &a, T b) {if (a > b) {a = b; return true;} return false;}
template <class T> bool maximize(T &a, T b) {if (a < b) {a = b; return true;} return false;}

const int N = 1e5 + 5, lim = 60, mod = 1e9 + 7;
const ll INF = 1e18;

int n, m, c[N];
struct Picture {
	int s, v;
	bool operator < (const Picture &other) {
		return v != other.v ? v > other.v : s > other.s;
	}
} p[N];

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);

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

	cin >> n >> m;
	for (int i = 1; i <= n; i++) cin >> p[i].s >> p[i].v;
	for (int i = 1; i <= m; i++) cin >> c[i];
	sort (p + 1, p + n + 1);
	sort (c + 1, c + m + 1, greater <int> ());

	int ans = 0;
	for (int i = 1; i <= n; i++)
		ans += (ans < m && p[i].s <= c[ans + 1]);
	cout << ans;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:41:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |                 freopen(Task".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:42:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |                 freopen(Task".out", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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