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各位高手帮帮忙看看,两个代码,一个ac,一个wa,用cin ac,用scanf就wa,超郁闷的问题

Posted by scauben0 at 2006-10-26 09:19:04 on Problem 3044
两个代码,一个ac,一个wa,用cin ac,用scanf就wa
#include<stdio.h>
#include<iostream>
using namespace std;

int stack[50010],top;
int main()
{
	int n,t,i,j,x,y,ans;
	scanf("%d%d",&n,&t);//换成cin>>n>>t;
	top=ans=0;
	for(i=0;i<n;i++)
	{
		scanf("%d%d",&x,&y);//换成cin>>x>>y;
		if(y<stack[top-1])
		{
			while(y<stack[top-1])
			{
				top--;
			}			
		}
		if(y>stack[top-1]&&y!=0||top==0&&y!=0) {stack[top++]=y;ans++;}
	}
	printf("%d",ans);
}



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