Posted on 2008-11-05 15:43
Hero 閱讀(94)
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代碼如詩－－ACM
1 // 1100 C++ Accepted 0.171 1 893 KB URAL
2
3
4 #include <stdio.h>
5 #include <stdlib.h>
6 #include <string.h>
7
8 struct NODE
9 {
10 int num ;
11 int x ;
12 int y ;
13 };
14 struct NODE node[150010] ;
15
16 int inn ;
17
18 int cmp( const void *a, const void *b )
19 {
20 struct NODE *c = (struct NODE *)a ;
21 struct NODE *d = (struct NODE *)b ;
22
23 if( c->y != d->y ) return d->y - c->y ;
24 else return c->num - d->num ;
25 }
26
27 int main()
28 {
29 while( scanf( "%d", &inn ) != EOF )
30 {
31 for( int i=1; i<=inn; i++ )
32 {
33 scanf( "%d %d", &node[i].x, &node[i].y ) ;
34 node[i].num = i ;
35 }
36
37 qsort( node+1, inn, sizeof(node[1]), cmp ) ;
38
39 for( int i=1; i<=inn; i++ )
40 printf( "%d %d\n", node[i].x, node[i].y ) ;
41 }
42
43 return 0 ;
44 }