zoj 3301 Make Pair

#include<iostream>#include<cstring>#include<cstdio>#include<algorithm>using namespace std;struct g{int x,id;}s[10100];bool cmp(g a,g b){return a.x<b.x;}int main(){int i,j,k,n,ri=0;while(scanf("%d",&n)!=EOF){ri++;if(ri!=1)printf("n");for(i=0;i<n;i++){scanf("%d",&s[i].x);s[i].id=i;}sort(s,s+n,cmp);for(i=0;i<n/2;i++){printf("%d %dn",s[i*2].id+1,s[i*2+1].id+1);}}}