#include<cstdio>#include<cstring>#include<iostream>#include<algorithm>using namespace std;struct shujupaixu{??? int xuhao ;??? int shuju ;??? int num ;};bool cmp ( shujupaixu a , shujupaixu b ){??? return a.shuju < b.shuju ;??? if( a.shuju == b. shuju )??? {??????? return a.xuhao < b.xuhao ;??? }}int main(){??? shujupaixu arr[100001];??? int i = 0 , j = 0 ;??? while(scanf( "%d %d" , &arr[i].xuhao , &arr[i].shuju ) != EOF)??? {??????? i ++ ;??????? arr[i].num = i ;??? }??? sort ( arr , arr+i , cmp ) ;??? for ( j = 0 ; j < i? ; j ++ )??? {??????? printf ( "%d %d\n" , arr[j].xuhao , arr[j].shuju ) ;??? }??? return 0 ;}