QOJ.ac

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
#553661#6330. XOR Reachableucup-team3691#WA 539ms154900kbC++203.0kb2024-09-08 17:24:112024-09-08 17:24:11

Judging History

你现在查看的是最新测评结果

  • [2024-09-08 17:24:11]
  • 评测
  • 测评结果:WA
  • 用时:539ms
  • 内存:154900kb
  • [2024-09-08 17:24:11]
  • 提交

answer

#include <iostream>
#include <vector>
#include <algorithm>
#include <stack>

using namespace std;
long long X[100005];
long long Y[100005];
long long W[100005];
pair<long long,long long> xorus[100005];
vector<pair<long long,long long> >much[400005];
long long ans=0;
stack<pair<long long,long long> >oper;
long long sz[100005];
long long sef[100005];
long long find(long long curr)
{
    if(sef[curr]==curr)
    {
        return curr;
    }
    return sef[curr];
}
void merge(long long a,long long b)
{
    a=find(a);
    b=find(b);
    if(a!=b)
    {
        ans=ans-(sz[a]-1)*sz[a];
        ans=ans-(sz[b]-1)*sz[b];
        if(sz[a]<sz[b])
        {
            swap(a,b);
        }
        sz[a]+=sz[b];
        ans=ans+(sz[a]-1)*sz[a];
        sef[b]=a;
        oper.push({a,b});
    }
}
void undo()
{
    pair<long long,long long>x=oper.top();
    oper.pop();
    ans-=sz[x.first]*(sz[x.first]-1);
    sz[x.first]-=sz[x.second];
    sef[x.second]=x.second;
    ans+=sz[x.first]*(sz[x.first]-1);
    ans+=sz[x.second]*(sz[x.second]-1);

}
long long rasp[100005];
void dfs(long long node,long long st,long long dr)
{
    long long timp=oper.size();
    for(auto i:much[node])
    {
        merge(i.first,i.second);
    }
    if(st!=dr)
    {
        long long mij=(st+dr)/2;
        dfs(node*2,st,mij);
        dfs(node*2+1,mij+1,dr);
    }
    else
    {
        rasp[xorus[st].second]=ans/2;
    }
    while(oper.size()>timp)
    {
        undo();
    }
}
void update(long long node,long long st,long long dr,long long qst,long long qdr,long long nod1,long long nod2)
{
    if(xorus[st].first>qdr || xorus[st].first>xorus[dr].first  || qst>xorus[dr].first ||qst>qdr)
    {
        return;
    }
    if(qst<=xorus[st].first && xorus[dr].first<=qdr)
    {
        much[node].push_back({nod1,nod2});
        return;
    }
    long long mij=(st+dr)/2;
    update(node*2,st,mij,qst,qdr,nod1,nod2);
    update(node*2+1,mij+1,dr,qst,qdr,nod1,nod2);
    return;
}
void addranges(long long a,long long b,long long w,long long k,long long q)
{
    long long pow=1,first,last;
    for(long long i=0;i<31;i++)
    {
        if((k&pow)>=1)
        {
            first=(k^w);
            first=first-first%pow;
            first=first^pow;
            last=first+pow-1;
            update(1,1,q,first,last,a,b);
        }
        pow=pow*2;
    }
}
signed main()
{
    long long n,i,j,k,l,t,op,a,b,x,m,w,q;
    cin>>n>>m>>k;
    for(i=1;i<=m;i++)
    {
        cin>>a>>b>>w;
        X[i]=a;
        Y[i]=b;
        W[i]=w;
    }
    cin>>q;
    for(i=1;i<=n;i++)
    {
        sz[i]=1;
        sef[i]=i;
    }
    for(i=1;i<=q;i++)
    {
        cin>>xorus[i].first;
        xorus[i].second=i;
    }
    sort(xorus+1,xorus+q+1);
    for(i=1;i<=m;i++)
    {
        addranges(X[i],Y[i],W[i],k,q);
    }
    dfs(1,1,q);
    for(i=1;i<=q;i++)
    {
        cout<<rasp[i]<<'\n';
    }
    return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 2ms
memory: 9736kb

input:

4 5 5
1 2 17
1 3 4
2 3 20
2 4 3
3 4 5
4
0
7
16
167

output:

2
6
3
0

result:

ok 4 number(s): "2 6 3 0"

Test #2:

score: 0
Accepted
time: 2ms
memory: 11748kb

input:

9 13 488888932
2 7 771479959
3 8 783850182
5 7 430673756
6 8 350738034
4 9 400768807
2 3 83653266
1 2 829786563
5 8 357613791
7 9 579696618
3 7 423191200
3 5 867380255
1 9 907715012
6 9 1033650694
8
498260055
144262908
117665696
848664012
983408133
32610599
478007408
134182829

output:

16
7
5
13
13
16
16
5

result:

ok 8 numbers

Test #3:

score: -100
Wrong Answer
time: 539ms
memory: 154900kb

input:

446 99235 764320136
1 2 467639025
1 39 240791819
1 197 320023434
1 391 968343602
1 116 841220144
1 345 697806443
1 409 489643820
1 339 733516272
1 89 560099922
1 431 722346703
1 433 246809211
1 344 769002876
1 234 597076758
1 178 505730391
1 75 826728597
1 74 14756981
1 63 280238017
1 288 638627144
...

output:

469119197378
465233397038
464539139198
469526108918
99235
472554402758
312188375445
99235
99235
99235
99235
99235
99235
99235
471330266138
99235
99235
99235
466333698818
469409830478
464596974218
99235
99235
99235
99235
99235
99235
99235
468480121358
469467967898
463787611538
99235
465349157078
9923...

result:

wrong answer 1st numbers differ - expected: '99235', found: '469119197378'