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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#144691 | #6136. Airdrop | PhantomThreshold# | AC ✓ | 532ms | 13904kb | C++20 | 2.7kb | 2023-08-21 17:50:59 | 2023-08-21 17:51:01 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int INF=1e7;
const int maxn=200000;
int T,n,Y;
pair<int,int> a[maxn+50];
int v[maxn+50];
int cnt[maxn+50];
int pre[maxn+50];
int suf[maxn+50];
bool notok[maxn+50];
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> T;
for (;T--;){
cin >> n >> Y;
for (int i=1;i<=n;i++){
cin >> a[i].first >> a[i].second;
a[i].second-=Y;
}
sort(a+1,a+n+1);
{
set<pair<int,int>> s;
for (int i=1;i<=n;i++) s.insert(a[i]);
for (int i=1;i<=n;i++){
if (a[i].second==0) continue;
if (s.count(make_pair(a[i].first,-a[i].second))) notok[i]=1;
}
}
map<int,int> dict;
for (int i=1;i<=n;i++) dict[a[i].first]++;
int tot=0;
for (auto [x,y]:dict){
++tot;
v[tot]=x;
cnt[tot]=y;
}
v[0]=-INF;v[tot+1]=INF;
/*
cerr << "--------------" << endl;
for (int i=1;i<=n;i++){
cerr << "(" << a[i].first << "," << a[i].second << ")" << endl;
}
cerr << "tot : " << tot << endl;
cerr << "v[] : ";
for (int i=1;i<=tot;i++) cerr << v[i] << " ";
cerr << endl;
cerr << "cnt[] : ";
for (int i=1;i<=tot;i++) cerr << cnt[i] << " ";
cerr << endl;
*/
{
set<int> s;
int l=1,r=1;
for (int sel=1;sel<=n;sel++){
for (r=l;r<=n && a[r].first==v[sel];r++);
for (int i=l;i<r;i++){
int now=abs(a[i].second)-a[i].first;
if (notok[i]){
if (s.count(now)) s.erase(now);
}
else{
if (s.count(now)) s.erase(now);
else s.insert(now);
}
}
pre[sel]=(int)s.size();
l=r;
}
}
{
set<int> s;
int l=n,r=n;
for (int sel=n;sel>=1;sel--){
for (l=r;l>=1 && a[l].first==v[sel];l--);
for (int i=r;i>l;i--){
int now=abs(a[i].second)+a[i].first;
if (notok[i]){
if (s.count(now)) s.erase(now);
}
else{
if (s.count(now)) s.erase(now);
else s.insert(now);
}
}
suf[sel]=(int)s.size();
r=l;
}
}
int mnans=INF,mxans=0;
for (int i=1;i<=tot;i++){
int now=pre[i-1]+cnt[i]+suf[i+1];
mnans=min(mnans,now);
mxans=max(mxans,now);
}
for (int i=1;i<=tot+1;i++){
if (v[i]==v[i-1]+1) continue;
int now=pre[i-1]+suf[i];
mnans=min(mnans,now);
mxans=max(mxans,now);
}
/*
cerr << "pre[] : ";
for (int i=1;i<=tot;i++) cerr << pre[i] << " ";
cerr << endl;
cerr << "suf[] : ";
for (int i=1;i<=tot;i++) cerr << suf[i] << " ";
cerr << endl;
cout << "mnans,mxans : ";
*/
cout << mnans << " " << mxans << "\n";
for (int i=0;i<=tot+1;i++){
v[i]=cnt[i]=0;
pre[i]=suf[i]=0;
}
for (int i=1;i<=n;i++){
notok[i]=0;
}
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 2ms
memory: 7560kb
input:
3 3 2 1 2 2 1 3 5 3 3 2 1 2 5 4 3 2 3 1 3 4 3
output:
1 3 0 3 2 2
result:
ok 6 numbers
Test #2:
score: 0
Accepted
time: 532ms
memory: 13904kb
input:
3508 6 1 7 1 1 1 9 1 10 1 3 1 4 1 3 8 8 9 8 7 1 8 9 5 10 1 10 8 10 2 5 1 9 9 5 9 10 9 6 4 4 7 6 7 10 5 3 8 9 5 9 9 7 5 4 7 10 5 6 9 9 5 6 6 9 3 3 2 5 1 3 8 6 4 5 9 10 2 2 9 10 10 10 8 4 1 7 1 6 1 3 1 5 1 2 4 9 3 3 3 4 5 3 8 9 6 9 9 6 3 9 5 9 3 2 9 9 1 9 2 4 1 5 4 5 6 6 5 9 8 4 1 2 1 5 1 7 1 3 1 9 10...
output:
6 6 1 3 1 5 2 6 2 6 0 2 4 4 2 2 4 4 4 7 4 4 9 9 4 6 0 3 2 6 2 2 2 6 10 10 9 9 1 3 2 4 0 2 2 4 4 7 6 6 9 9 2 2 2 2 3 5 1 4 2 2 1 1 3 5 4 7 3 6 1 1 5 7 5 5 1 3 2 2 1 7 1 1 4 6 2 4 2 6 2 4 1 7 2 4 9 9 0 3 1 1 3 8 2 2 2 2 9 9 3 7 4 4 4 6 2 5 0 2 2 5 3 3 0 4 4 4 2 4 2 2 4 6 6 6 6 6 0 2 2 6 2 4 2 6 2 5 1 ...
result:
ok 7016 numbers