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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
#213952#2380. 中位数stawalr303ms1256kbC++111.2kb2024-11-14 19:51:432024-11-14 23:04:02

answer

#include<bits/stdc++.h>
using namespace std;
const int mn=3e5+5;
int n,a[mn];
priority_queue<int> q1;
priority_queue<int,vector<int>,greater<int> > q2;
map<int,int> mp;
int main()
{
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
    {
        scanf("%d",&a[i]);
    }
    // q2.push(1);
    // q2.push(2);
    // cerr<<q2.top();
    for(int k=1;k<=n;k++)
    {
        while(!q1.empty())q1.pop();
        while(!q2.empty())q2.pop();
        for(int i=k;i<=n;i++)
        {
            q1.push(a[i]);
            if(q1.size()>q2.size()+1)
            {
                q2.push(q1.top());
                q1.pop();
                // q1.push(q2.top());
                // q2.pop();
            }
            while(!q2.empty() && q1.top()>q2.top())
            {
                q2.push(q1.top());
                q1.pop();
                q1.push(q2.top());
                q2.pop();
            }
            mp[q1.top()]++;
        }
    }
    int tmp=(n*(n+1)/2+1)/2;
    for(auto i:mp)
    {
        tmp-=i.second;
        if(tmp<=0)
        {
            printf("%d",i.first);
            return 0;
        }
    }
    // cerr<<"fin";
}

详细

小提示:点击横条可展开更详细的信息

Test #1:

score: 10
Accepted
time: 3ms
memory: 1256kb

input:

200
247837946 222748444 549404903 934970141 181690491 116150147 755881953 912914845 578004877 589768...

output:

411892743

result:

ok 1 number(s): "411892743"

Test #2:

score: 10
Accepted
time: 0ms
memory: 1256kb

input:

200
504553675 321343511 781936447 172776833 779139954 643752948 106 164 303976944 828799931 11502170...

output:

451369372

result:

ok 1 number(s): "451369372"

Test #3:

score: 10
Accepted
time: 0ms
memory: 1256kb

input:

200
738368650 91602659 340556191 835209882 409442204 656938221 258295858 90658347 126689369 56196859...

output:

420852999

result:

ok 1 number(s): "420852999"

Test #4:

score: 0
Time Limit Exceeded

input:

5000
300051244 685920750 122806687 315801142 33592358 339985437 262520930 380010194 687330910 550362...

output:


result:


Test #5:

score: 0
Time Limit Exceeded

input:

5000
108135249 950186870 146626753 682580494 744412491 4159 995071655 157947560 668940645 878891308 ...

output:


result:


Test #6:

score: 0
Time Limit Exceeded

input:

5000
246610103 780664789 678774940 716124165 518453378 300121008 135383319 939869983 430946660 13412...

output:


result:


Test #7:

score: 0
Time Limit Exceeded

input:

300000
786856547 380253059 684225515 795392038 881780483 18437791 793783577 832330260 801624996 3466...

output:


result:


Test #8:

score: 0
Time Limit Exceeded

input:

300000
951000485 930070933 3566360 157114366 150196488 611226665 123590886 950624066 472150346 57976...

output:


result:


Test #9:

score: 0
Time Limit Exceeded

input:

300000
728509094 406128756 696166390 756254976 31403187 672131182 35544213 870708756 3659210 5227553...

output:


result:


Test #10:

score: 0
Time Limit Exceeded

input:

300000
804874490 52247250 546638789 400214210 383796618 47995083 814777769 507157584 466189162 28296...

output:


result: