比较好理解的代码空格隔开了三个输出的判定

#include<iostream>
using namespace std;
int n,x,a[100005],minn;
int main(){
cin>>n;
for(int i=1;i<=n;i++) cin>>a[i];
cin>>x;
int y;
for(int i=1;i<=x;i++){
cin>>y;

	int l=1,r=n,mid,ans=0;
	while(l<=r){
		mid=(l+r)>>1;
		if(a[mid]>y) r=mid-1;
		else if(a[mid]<y) l=mid+1;
		else{
			ans=mid;
			r=mid-1;
		}
	}
	if(!ans) cout<<-1<<" ";
	else cout<<ans<<" ";
	
	l=1,r=n,ans=0;
	while(l<=r){
		mid=(l+r)>>1;
		if(a[mid]>y) r=mid-1;
		else if(a[mid]<y) l=mid+1;
		else{
			ans=mid;
			l=mid+1;
		}
	}
	if(!ans) cout<<-1<<" ";
	else cout<<ans<<" ";
	
	l=1,r=n,minn=r+1;
	while(l<=r){
		mid=(l+r)>>1;
		if(a[mid]>y){
			minn=min(minn,mid);
			r=mid-1;
		}else if(a[mid]<=y){
			l=mid+1;
	    }
	}
	if(minn<n+1) cout<<minn<<endl;
	else cout<<-1<<endl;
}

return 0;

}