Created
June 22, 2013 07:35
-
-
Save tarawa/5836220 to your computer and use it in GitHub Desktop.
POJ2182 (C) && Differences between poj2828.c & poj2182.c
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#include <stdio.h> | |
#define maxn 8010 | |
int a[maxn],used[maxn]; | |
struct segment { | |
int left,right,count; | |
} tree[maxn*3]; | |
void tree_create(int p, int l, int r) { | |
tree[p].left=l; | |
tree[p].right=r; | |
tree[p].count=r-l+1; | |
if (tree[p].count==1) return; | |
int m=(l+r)>>1; | |
tree_create(p*2,l,m); | |
tree_create(p*2+1,m+1,r); | |
} | |
void tree_insert(int p, int pos, int val) { | |
if (tree[p].left==tree[p].right) { | |
tree[p].count--; | |
a[val]=tree[p].left; | |
used[a[val]]=1; | |
return; | |
} | |
if (tree[p*2].count>=pos) tree_insert(p*2,pos,val); else tree_insert(p*2+1,pos-tree[p*2].count,val); | |
tree[p].count=tree[p*2].count+tree[p*2+1].count; | |
} | |
int main() { | |
int n,i,pos[maxn]; | |
scanf("%d",&n); | |
for (i=2; i<=n; i++) scanf("%d",&pos[i]); | |
tree_create(1,1,n); | |
for (i=n; i>=2; i--) tree_insert(1,pos[i]+1,i); | |
for (i=1; i<=n; i++) if (!used[i]) break; | |
a[1]=i; | |
for (i=1; i<=n; i++) printf("%d\n",a[i]); | |
return 0; | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
3c3 | |
< #define maxn 8010 | |
--- | |
> #define maxn 200010 | |
5c5 | |
< int a[maxn],used[maxn]; | |
--- | |
> int a[maxn]; | |
24,25c24 | |
< a[val]=tree[p].left; | |
< used[a[val]]=1; | |
--- | |
> a[tree[p].left]=val; | |
33,40c32,39 | |
< int n,i,pos[maxn]; | |
< scanf("%d",&n); | |
< for (i=2; i<=n; i++) scanf("%d",&pos[i]); | |
< tree_create(1,1,n); | |
< for (i=n; i>=2; i--) tree_insert(1,pos[i]+1,i); | |
< for (i=1; i<=n; i++) if (!used[i]) break; | |
< a[1]=i; | |
< for (i=1; i<=n; i++) printf("%d\n",a[i]); | |
--- | |
> int n,pos[maxn],val[maxn]; | |
> while(~scanf("%d",&n)) { | |
> for (int i=1; i<=n; i++) scanf("%d%d",&pos[i],&val[i]); | |
> tree_create(1,0,n+1); | |
> for (int i=n; i>=1; i--) tree_insert(1,pos[i]+1,val[i]); | |
> for (int i=0; i<n-1; i++) printf("%d ",a[i]); | |
> printf("%d\n",a[n-1]); | |
> } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment