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求大神赐教,,测试了很久,测试结果和别人的一样,就是AC不了

Posted by Lionel520 at 2014-10-10 10:27:24 on Problem 1442
代码如下:
#include <cstdio>
#include <queue>
#include <vector>

using namespace std ;

int main()
{
	priority_queue<int> A;
	vector<int> big;
	int M,N;
	int t[30010];
	int u[30010];
	scanf("%d%d",&M,&N);
	for(int i = 1 ; i <= M ; ++i)
	{
		scanf("%d",&t[i]);
	}
	u[0] = 0;
	for(int i = 1 ; i <= N ; ++i)
	{
		scanf("%d",&u[i]);
	}
	for(int i = 1 ; i <= N ; ++i)
	{
		for(int j = u[i-1]+1 ; j <= u[i] ; ++j)
		{
			A.push(t[j]);
		}
		
		while(i < A.size())                 //时刻保证A.top()的值就是get后需要的 
		{
			big.push_back(A.top());
			A.pop();
		}
		
		printf("%d\n",A.top());
		
		if( !big .empty() )   //把最小的值压入A中,因为下次第i小的数只会出现在big中和下次要压入A中的数据之间
		{
			A.push(big.back());
			big.pop_back();
		}
	}
	return 0;
}

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