Submission #874625

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
874625	2023-11-17 12:14:46	josanneo22	Pairs (IOI07_pairs)	C++17	60 / 100	42 ms	9884 KiB

pairs

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/*
Problem: IOI 2007 Pairs
When:    2023-11-16 14:54:19
Author:  Ning07
*/
#include<bits/stdc++.h>
using namespace std;
using i64=long long;
constexpr int NN=2e5;
int N,B,M,D,a[NN],x[NN],y[NN];
void solve1(){
    for(int i=0;i<N;i++){
        std::cin>>a[i];
    }
    sort(a,a+N);
    i64 ans=0;
    for(int i=0;i<N;i++){
        int lst=lower_bound(a,a+N,a[i]-D)-a;
        ans+=i-lst;
    }
    std::cout<<ans<<'\n';
}
i64 tr[NN<<1];
void update(int x,i64 v){
    x+=NN;
    for(;x;x/=2){ tr[x]+=v;}
}
 
 
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