Submission #110347

#	Time	Username	Problem	Language	Result	Execution time	Memory
110347		luciocf	Exhibition (JOI19_ho_t2)	C++14	50 / 100	32 ms	4600 KiB

joi2019_ho_t2

#include <bits/stdc++.h>

using namespace std;

const int maxn = 1e3+10;

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

int c[maxn];

int n, m;

int dp[maxn][maxn];

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

int solve(int i, int j)
{
	if (i == n+1 || j == m+1) return 0;
	if (dp[i][j] != -1) return dp[i][j];

	int ans = 0;

	if (p[i].s <= c[j])
		ans = max(ans, 1+solve(i+1, j+1));

	ans = max(ans, solve(i+1, j));
	ans = max(ans, solve(i, j+1));

	return dp[i][j] = ans;
}

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);

	memset(dp, -1, sizeof dp);

	printf("%d\n", solve(1, 1));
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:42:7: 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:45:8: 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:48:8: 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: 0 / 50