제출 #1040413

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1040413		tamir1	Pairs (IOI07_pairs)	C++17	30 / 100	68 ms	9740 KiB

pairs

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ordered_set tree<ll,null_type,less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update>
using namespace std;
using namespace __gnu_pbds;
ordered_set s;
ll b,n,m,d,i,j,x[100010],y[100010],z[100010];
ll ans;
int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin >> b >> n >> d >> m;
	if(b==1) for(i=1;i<=n;i++) cin >> x[i],s.insert(x[i]);
	if(b==2) for(i=1;i<=n;i++) cin >> x[i] >> y[i];
	if(b==3) for(i=1;i<=n;i++) cin >> x[i] >> y[i] >> z[i];
	if(b==1){
		for(i=1;i<=n;i++){
			ans=ans+s.order_of_key(x[i]+d+1)-s.order_of_key(x[i]-d)-1;
		}
	}
	cout << ans/2;
}

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