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求大神看下如何改进,,超时了。。。#include <stdio.h> int max; void add(int a[1000],int n,int left,int right,int now,int num)//now为当前要加的层 { if(now==n+1) { if(max<num) { max=num; } return ; } else { add(a,n,left+now,right+now,now+1,num+a[left]); add(a,n,left+now+1,right+now+1,now+1,num+a[right]); } } int main() { int n,i,n1,num; int a[1000]; scanf("%d",&n); n1=n*(n+1)/2; for(i=0;i<n1;i++) { scanf("%d",&a[i]); } max=0; num=0; add(a,n,1,2,2,a[0]); printf("%d\n",max); return 0; } Followed by:
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