Submission #110384

#	Time	Username	Problem	Language	Result	Execution time	Memory
110384		luciocf	Exhibition (JOI19_ho_t2)	C++14	100 / 100	135 ms	4552 KiB

joi2019_ho_t2

#include <bits/stdc++.h>

using namespace std;

const int maxn = 1e5+10;

struct P
{
	int s, v;
} p[maxn];

int suf[maxn];

int c[maxn];

int n, m;

bool comp(P a, P b)
{
	if (a.v == b.v) return a.s < b.s;
	return a.v < b.v;
}

int main(void)
{
	scanf("%d %d", &n, &m);

	for (int i = 1; i <= n; i++)
		scanf("%d %d", &p[i].s, &p[i].v);

	for (int i = 1; i <= m; i++)
		scanf("%d", &c[i]);

	sort(p+1, p+n+1, comp);
	sort(c+1, c+m+1);

	int ans = 0, ptr = n;
	for (int i = m; i >= 1; i--)
	{
		for (; ptr >= 1 && p[ptr].s > c[i]; ptr--);

		if (ptr >= 1)
		{
			ans++;
			ptr--;
		}
	}

	printf("%d\n", ans);
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:26:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:29:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &p[i].s, &p[i].v);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:32:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &c[i]);
   ~~~~~^~~~~~~~~~~~~

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