이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
const int MN = 1e5+5;
int B,N,D,M,X[MN],Y[MN],Z[MN],cnt;
long long ans;
int main()
{
cin >> B >> N >> D >> M;
if(B==1) {
for(int i=0; i<N; i++)
cin >> X[i];
sort(X,X+N);
for(int i=0; i<N; i++) {
while(cnt<N && X[i]+D>=X[cnt])
cnt++;
ans += cnt-i-1;
}
cout << ans;
} else {
for(int i=0; i<N; i++)
cin >> X[i] >> Y[i] >> Z[i];
for(int i=0; i<N; i++) {
for(int j=i+1; j<N; j++) {
if(abs(X[i]-X[j])+abs(Y[i]-Y[j])+abs(Z[i]-Z[j])<=D)
ans++;
}
}
cout << ans;
}
}
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