Submission #259710

#	Time	Username	Problem	Language	Result	Execution time	Memory
259710		arnold518	Worst Reporter 2 (JOI16_worst_reporter2)	C++14	15 / 100	10 ms	10880 KiB

worst_reporter2

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

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 2e5;

int N;
pii A[MAXN+10], B[MAXN+10];

int dp[(1<<16)+10][20];

int solve(int mask, int p)
{
	if(p==N+1) return 0;

	int &ret=dp[mask][p];
	if(ret!=-1) return ret;

	ret=987654321;
	for(int i=1; i<=N; i++)
	{
		if(mask&(1<<(i-1))) continue;
		if(A[p].first>B[i].first) continue;
		if(A[p].second!=B[i].second) ret=min(ret, solve(mask|(1<<(i-1)), p+1)+1);
		else ret=min(ret, solve(mask|(1<<(i-1)), p+1));
	}
	return ret;
}

int main()
{
	scanf("%d", &N);
	for(int i=1; i<=N; i++) scanf("%d%d", &A[i].second, &A[i].first);
	for(int i=1; i<=N; i++) scanf("%d%d", &B[i].second, &B[i].first);

	memset(dp, -1, sizeof(dp));
	printf("%d\n", solve(0, 1));
}

Compilation message (stderr)

worst_reporter2.cpp: In function 'int main()':
worst_reporter2.cpp:35:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
worst_reporter2.cpp:36:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1; i<=N; i++) scanf("%d%d", &A[i].second, &A[i].first);
                          ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
worst_reporter2.cpp:37:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1; i<=N; i++) scanf("%d%d", &B[i].second, &B[i].first);
                          ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40