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Re:贴个一维的滚动数组(C++提交 156K)

Posted by jxnkhq_love at 2012-07-26 17:11:26 on Problem 1159
In Reply To:贴个一维的滚动数组(C++提交 156K) Posted by:lovai at 2010-11-27 14:21:04
> 真是不明白为啥用C++提交内存占用少几百k,oj是怎么算出内存消耗的啊 难道不仅和实际使用的有关还和编译系统有很大关系??
> #include <stdio.h>
> #include <string.h>
> int main()
> {	
> 	char a[5002];
> 	int f[5002];
>     int i,j,n,t,tp;
>     scanf("%d%s",&n,a+1);
> 
> 	memset(f,0,sizeof(f));
>     for(i=1;i<=n;i++){
> 		tp=0;	//f[i-1,j-1]复位,一开始忘记了,老是wa,郁闷
> 		for(j=n;j>=1;j--){
> 			if(a[i]==a[j]){
> 				t=f[j];
> 				f[j]=tp+1;	//f[i,j]=f[i-1,j-1]+1
> 				tp=t;		
> 			}
> 			else{
> 				tp=f[j];
> 				if(f[j]<f[j+1]) f[j]=f[j+1]; //f[i-1,j]<f[i,j-1]
> 			}
> 		}
>     }
>     printf("%d\n",n-f[1]);
>     return 0;
> }

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