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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#291338 | #4896. Alice、Bob 与 DFS | Kevin5307 | 5 | 76ms | 19028kb | C++20 | 3.1kb | 2023-12-26 12:33:04 | 2023-12-26 12:33:04 |
Judging History
answer
//Author: Kevin
#include<bits/stdc++.h>
//#pragma GCC optimize("O2")
using namespace std;
#define ll long long
#define ull unsigned ll
#define pb emplace_back
#define mp make_pair
#define ALL(x) (x).begin(),(x).end()
#define rALL(x) (x).rbegin(),(x).rend()
#define srt(x) sort(ALL(x))
#define rev(x) reverse(ALL(x))
#define rsrt(x) sort(rALL(x))
#define sz(x) (int)(x.size())
#define inf 0x3f3f3f3f
#define pii pair<int,int>
#define lb(v,x) (int)(lower_bound(ALL(v),x)-v.begin())
#define ub(v,x) (int)(upper_bound(ALL(v),x)-v.begin())
#define uni(v) v.resize(unique(ALL(v))-v.begin())
#define longer __int128_t
void die(string S){puts(S.c_str());exit(0);}
int c[200200];
vector<int> G[200200];
int n;
ll g0[200200],g1[200200];
namespace bit
{
int bit[200200];
vector<pii> memo;
void update(int p,int v,bool ign=0)
{
p++;
if(!ign)
memo.pb(p,v);
while(p<200200)
{
bit[p]+=v;
p+=(p&(-p));
}
}
int query(int p)
{
p++;
int ans=0;
while(p)
{
ans+=bit[p];
p-=(p&(-p));
}
return ans;
}
void clear()
{
for(auto pr:memo)
update(pr.first,-pr.second,1);
memo.clear();
}
}
void get()
{
for(int i=n;i>=1;i--)
if(c[i])
{
rev(G[i]);
{
bit::update(0,1);
for(auto j:G[i]) if(c[j])
{
int cur=g0[j];
int l=1,r=200001;
while(l<r)
{
int mid=(l+r)/2;
if((mid+1)-bit::query(mid)>=cur)
r=mid;
else
l=mid+1;
}
bit::update(l,1);
}
else
{
int cur=g0[j];
if(bit::query(cur)==bit::query(cur-1))
bit::update(cur,1);
}
int l=1,r=200001;
while(l<r)
{
int mid=(l+r)/2;
if((mid+1)-bit::query(mid))
r=mid;
else
l=mid+1;
}
g0[i]=l;
bit::clear();
}
{
for(auto j:G[i]) if(c[j])
{
int cur=(bit::query(0)?g0[j]:g1[j]+1);
int l=1,r=200001;
while(l<r)
{
int mid=(l+r)/2;
if((mid+1)-bit::query(mid)>=cur)
r=mid;
else
l=mid+1;
}
bit::update(l,1);
}
else
{
int cur=(bit::query(0)?g0[j]:g1[j]);
if(bit::query(cur)==bit::query(cur-1))
bit::update(cur,1);
}
int l=1,r=200001;
while(l<r)
{
int mid=(l+r)/2;
if((mid+1)-bit::query(mid))
r=mid;
else
l=mid+1;
}
g0[i]=l;
bit::clear();
}
}
else
{
int cur0=0,cur1=1;
rev(G[i]);
for(auto j:G[i])
{
cur0=(cur0?g1[j]:g0[j]);
cur1=(cur1?g1[j]:g0[j]);
}
g0[i]=cur0^1;
g1[i]=cur1^1;
}
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
cin>>n;
for(int i=1;i<=n;i++)
cin>>c[i];
for(int i=1;i<=n;i++)
{
int m;
cin>>m;
if(!m) c[i]=1;
while(m--)
{
int x;
cin>>x;
G[i].pb(x);
}
}
get();
// for(int i=1;i<=n;i++)
// cerr<<g0[i]<<" "<<g1[i]<<endl;
int k;
cin>>k;
int ans=0;
while(k--)
{
int x;
cin>>x;
ans^=g0[x];
}
if(ans)
cout<<"Alice";
else
cout<<"Bob";
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 5
Accepted
Test #1:
score: 5
Accepted
time: 0ms
memory: 11920kb
input:
1000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Alice
result:
ok "Alice"
Test #2:
score: 0
Accepted
time: 2ms
memory: 11832kb
input:
1000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Bob
result:
ok "Bob"
Test #3:
score: 0
Accepted
time: 0ms
memory: 11052kb
input:
1000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Alice
result:
ok "Alice"
Test #4:
score: 0
Accepted
time: 2ms
memory: 10668kb
input:
10 0 0 0 0 0 0 0 0 0 0 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 0 1 1
output:
Bob
result:
ok "Bob"
Test #5:
score: 0
Accepted
time: 0ms
memory: 11840kb
input:
11 0 0 0 0 0 0 0 0 0 0 0 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 0 0 2 1 11
output:
Alice
result:
ok "Alice"
Test #6:
score: 0
Accepted
time: 18ms
memory: 19028kb
input:
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Bob
result:
ok "Bob"
Test #7:
score: 0
Accepted
time: 26ms
memory: 18520kb
input:
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Bob
result:
ok "Bob"
Test #8:
score: 0
Accepted
time: 76ms
memory: 16972kb
input:
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Alice
result:
ok "Alice"
Test #9:
score: 0
Accepted
time: 76ms
memory: 16896kb
input:
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Bob
result:
ok "Bob"
Test #10:
score: 0
Accepted
time: 67ms
memory: 16908kb
input:
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Bob
result:
ok "Bob"
Test #11:
score: 0
Accepted
time: 71ms
memory: 16260kb
input:
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Bob
result:
ok "Bob"
Test #12:
score: 0
Accepted
time: 68ms
memory: 16680kb
input:
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Bob
result:
ok "Bob"
Test #13:
score: 0
Accepted
time: 74ms
memory: 15932kb
input:
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Alice
result:
ok "Alice"
Test #14:
score: 0
Accepted
time: 55ms
memory: 16088kb
input:
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...
output:
Bob
result:
ok "Bob"
Test #15:
score: 0
Accepted
time: 2ms
memory: 11776kb
input:
1 0 0 1 1
output:
Alice
result:
ok "Alice"
Test #16:
score: 0
Accepted
time: 0ms
memory: 10764kb
input:
3 0 0 0 1 2 1 3 0 1 1
output:
Alice
result:
ok "Alice"
Test #17:
score: 0
Accepted
time: 1ms
memory: 10764kb
input:
4 0 0 0 0 1 2 1 3 0 0 2 1 4
output:
Bob
result:
ok "Bob"
Subtask #2:
score: 0
Wrong Answer
Test #18:
score: 15
Accepted
time: 1ms
memory: 10756kb
input:
7 0 0 1 1 0 1 1 1 2 2 3 4 0 2 5 6 0 1 7 0 1 1
output:
Bob
result:
ok "Bob"
Test #19:
score: -15
Wrong Answer
time: 1ms
memory: 10512kb
input:
6 0 1 0 0 1 0 2 2 6 3 3 4 5 0 0 0 0 1 1
output:
Alice
result:
wrong answer 1st words differ - expected: 'Bob', found: 'Alice'
Subtask #3:
score: 0
Wrong Answer
Test #55:
score: 15
Accepted
time: 2ms
memory: 11916kb
input:
7 0 0 1 1 0 1 1 1 2 2 3 4 0 2 5 6 0 1 7 0 1 1
output:
Bob
result:
ok "Bob"
Test #56:
score: -15
Wrong Answer
time: 1ms
memory: 11804kb
input:
6 0 1 0 0 1 0 2 2 6 3 3 4 5 0 0 0 0 1 1
output:
Alice
result:
wrong answer 1st words differ - expected: 'Bob', found: 'Alice'
Subtask #4:
score: 0
Wrong Answer
Test #103:
score: 20
Accepted
time: 2ms
memory: 10800kb
input:
10 1 1 1 1 1 1 1 1 1 1 1 2 4 3 5 7 8 1 4 0 1 6 0 0 1 9 1 10 0 1 1
output:
Alice
result:
ok "Alice"
Test #104:
score: 0
Accepted
time: 1ms
memory: 10208kb
input:
10 1 1 1 1 1 1 1 1 1 1 4 2 3 4 10 0 0 1 5 1 6 2 7 8 0 1 9 0 0 1 1
output:
Alice
result:
ok "Alice"
Test #105:
score: 0
Accepted
time: 2ms
memory: 11036kb
input:
10 1 1 1 1 1 1 1 1 1 1 2 2 7 1 3 2 4 6 1 5 0 0 0 1 9 0 0 10 8 10 10 8 10 8 10 10 1 8
output:
Alice
result:
ok "Alice"
Test #106:
score: 0
Accepted
time: 2ms
memory: 11900kb
input:
10 1 1 1 1 1 1 1 1 1 1 2 2 3 0 0 1 5 0 2 7 9 1 8 0 0 0 10 6 6 4 1 1 4 10 10 10 6
output:
Alice
result:
ok "Alice"
Test #107:
score: -20
Wrong Answer
time: 2ms
memory: 11000kb
input:
10 1 1 1 1 1 1 1 1 1 1 1 2 0 2 4 5 0 1 6 0 0 0 0 0 10 10 10 1 9 8 9 10 7 7 3
output:
Bob
result:
wrong answer 1st words differ - expected: 'Alice', found: 'Bob'
Subtask #5:
score: 0
Skipped
Dependency #4:
0%
Subtask #6:
score: 0
Skipped
Dependency #1:
100%
Accepted
Dependency #2:
0%