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线段树查找,WA不停,实在是找不出来怎么错了,路过的大牛行行好,帮忙看看提提意见#include<stdio.h> #define N 8001 struct Node{ int s,t,nlen; }node[2*N]; void creatTree(int s,int l,int r) { node[s].s=l,node[s].t=r; node[s].nlen=r-l+1; if(r>l) { int m=(r+l)>>1; creatTree(2*s,l,m); creatTree(2*s+1,m+1,r); } } int search(int pos,int s) { node[s].nlen--; if(node[s].s!=node[s].t) { if(pos<=node[2*s].nlen) return search(pos,2*s); else return search(pos-node[2*s].nlen,2*s+1); } return node[s].s; } int main() { // freopen("data.txt","r",stdin); int n,i,a[N],b[N]; scanf("%d",&n); a[1]=0; for(i=2;i<=n;i++) scanf("%d",&a[i]); creatTree(1,1,n); for(i=n;i>=1;i--) b[i]=search(a[i]+1,1);; for(i=1;i<=n;i++) printf("%d\n",b[i]); return 0; } Followed by: Post your reply here: |
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