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Problem : 2041 ( 超级楼梯 )     Judge Status : Time Limit Exceeded
RunId : 858096    Language : C++    Author : chenjian880514
Code Render Status : Rendered By HDOJ C++ Code Rander Version 0.01 Beta
#include<stdio.h>

__int64 a[50];

int main()
{
    int n,i;
    a[0]=0;
    a[1]=1;
    a[2]=2;
    a[3]=3;
    a[4]=4;
    a[5]=6;
    a[6]=9;
    for(i=7;i<=55;i++)
        a[i]=a[i-1]+i-3;
    while(scanf("%d",&n)!=0)
    {
              printf("%I64d\n",a[n]);
    }
   
}
#include<stdio.h>

__int64 a[50];

int main()
{
    int n,i;
    a[0]=0;
    a[1]=1;
    a[2]=2;
    a[3]=3;
    a[4]=4;
    a[5]=6;
    a[6]=9;
    for(i=7;i<=55;i++)
        a[i]=a[i-1]+i-3;
    while(scanf("%d",&n)!=0)
    {
              printf("%I64d\n",a[n]);
    }
   
}
 
题目要求，n=0表示输入数据的结束，不做处理。
而我的遇0时好像只是不处理，但输入没有结束，我的想法对吗？那程序应该怎样修改呢