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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#291995#4896. Alice、Bob 与 DFSdo_while_true0 3ms18124kbC++202.7kb2023-12-27 15:38:512023-12-27 15:38:52

Judging History

你现在查看的是最新测评结果

  • [2023-12-27 15:38:52]
  • 评测
  • 测评结果:0
  • 用时:3ms
  • 内存:18124kb
  • [2023-12-27 15:38:51]
  • 提交

answer

#include<cstdio>
#include<vector>
#include<queue>
#include<cstring>
#include<iostream>
#include<algorithm>
#include<ctime>
#include<random>
#include<assert.h>
#define pb emplace_back
#define mp make_pair
#define fi first
#define se second
#define dbg(x) cerr<<"In Line "<< __LINE__<<" the "<<#x<<" = "<<x<<'\n'
#define dpi(x,y) cerr<<"In Line "<<__LINE__<<" the "<<#x<<" = "<<x<<" ; "<<"the "<<#y<<" = "<<y<<'\n'
#define DE(fmt,...) fprintf(stderr, "Line %d : " fmt "\n",__LINE__,##__VA_ARGS__)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int>pii;
typedef pair<ll,int>pli;
typedef pair<ll,ll>pll;
typedef pair<int,ll>pil;
typedef vector<int>vi;
typedef vector<ll>vll;
typedef vector<pii>vpii;
typedef vector<pll>vpll;
template<typename T>T cmax(T &x, T y){return x=x>y?x:y;}
template<typename T>T cmin(T &x, T y){return x=x<y?x:y;}
template<typename T>
T &read(T &r){
	r=0;bool w=0;char ch=getchar();
	while(ch<'0'||ch>'9')w=ch=='-'?1:0,ch=getchar();
	while(ch>='0'&&ch<='9')r=r*10+(ch^48),ch=getchar();
	return r=w?-r:r;
}
template<typename T1,typename... T2>
void read(T1 &x,T2& ...y){read(x);read(y...);}
const int N=400010;
const int M=400001;
int n,m;
int c[N],f[N][4];
vi eg[N];
int tree[N],ok[N];
inline int lowbit(int x){return x&(-x);}
void modify(int x,int v){
	if(v==1)ok[x]=1;
	++x;
	for(;x<=M;x+=lowbit(x))tree[x]+=v;
}
int kth(int k){
	int x=0;--k;
	for(int i=18;~i;--i){
		int p=(1<<i);
		if(x+p<=M && k>=p-tree[x+p])
			k-=p-tree[x+p],x+=p;
	}
	return x;
}
signed main(){
	read(n);
	for(int i=1;i<=n;i++)read(c[i]);
	for(int i=1;i<=n;i++){
		int k;read(k);
		for(int j=1;j<=k;j++){
			int x;read(x);
			eg[i].pb(x);
		}
		reverse(eg[i].begin(),eg[i].end());
		if(eg[i].empty())c[i]=1; 
	}
	for(int x=n;x>=1;x--)
		for(int i=1;i<3;i++)
			if(c[x]){
				vi vec;
				int now=i;
				if(now&1)modify(0,1),vec.pb(0);
				if(now&2)modify(1,1),vec.pb(1);
				for(auto v:eg[x]){
					now=ok[0]|(ok[1]<<1);
					int w=0;
					if(c[v]==0)w=f[v][now];
					else w=kth(f[v][now]+1-ok[0]-ok[1]);
					if(!ok[w]){
						modify(w,1);
						vec.pb(w);
					}
				}
				f[x][i]=kth(1);
				for(auto w:vec)ok[w]=0,modify(w,-1);
			}
			else{
				int now=i;
				for(auto v:eg[x]){
					if(f[v][now]==0)now=1;//new S={0}
					else now=2;//new S={1}
				}
				f[x][i]=now==2?0:1;
			}
	for(int i=1;i<=n;i++){
		if(c[i]==0)
			assert(f[i][2]==f[i][3]);
//		cout<<f[i][0]<<' '<<f[i][1]<<' '<<f[i][2]<<' '<<f[i][3]<<'\n';
	}
	int q,s=0;read(q);
	while(q--){
		int x;read(x);
		s^=f[x][1];
	}
	if(s)puts("Alice");
	else puts("Bob");
    #ifdef do_while_true
//		cerr<<'\n'<<"Time:"<<1.0*clock()/CLOCKS_PER_SEC*1000<<" ms"<<'\n';
	#endif
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 0
Runtime Error

Test #1:

score: 0
Runtime Error

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:


result:


Subtask #2:

score: 0
Runtime Error

Test #18:

score: 0
Runtime Error

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:


result:


Subtask #3:

score: 0
Runtime Error

Test #55:

score: 0
Runtime Error

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:


result:


Subtask #4:

score: 0
Wrong Answer

Test #103:

score: 20
Accepted
time: 2ms
memory: 15856kb

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: 0ms
memory: 17852kb

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: 17808kb

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: 3ms
memory: 17908kb

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: 0
Accepted
time: 0ms
memory: 17920kb

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:

Alice

result:

ok "Alice"

Test #108:

score: 0
Accepted
time: 2ms
memory: 17912kb

input:

10
1 1 1 1 1 1 1 1 1 1
1 2
1 3
1 4
1 5
2 6 7
0
2 8 9
0
1 10
0
10
1 1 1 1 1 1 1 1 1 1

output:

Bob

result:

ok "Bob"

Test #109:

score: 0
Accepted
time: 2ms
memory: 17900kb

input:

10
1 1 1 1 1 1 1 1 1 1
1 2
0
1 4
0
1 6
0
0
0
0
0
10
10 9 1 10 8 1 3 7 9 5

output:

Bob

result:

ok "Bob"

Test #110:

score: 0
Accepted
time: 2ms
memory: 17808kb

input:

10
1 1 1 1 1 1 1 1 1 1
2 2 3
0
2 4 6
1 5
0
1 7
0
0
0
0
10
10 9 1 8 1 10 10 9 1 1

output:

Bob

result:

ok "Bob"

Test #111:

score: 0
Accepted
time: 0ms
memory: 17900kb

input:

100
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 2
1 3
2 4 38
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
4 14 35 36 37
1 15
1 16
1 17
1 18
2 19 31...

output:

Alice

result:

ok "Alice"

Test #112:

score: 0
Accepted
time: 2ms
memory: 18068kb

input:

100
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 2
0
2 4 29
1 5
3 6 7 8
0
0
1 9
1 10
5 11 20 21 27 28
5 12 13 16 18 19
0
2 14 15
0
0
1 17
0
0
0...

output:

Bob

result:

ok "Bob"

Test #113:

score: 0
Accepted
time: 2ms
memory: 15840kb

input:

100
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 2
0
1 4
3 5 65 66
1 6
3 7 8 64
0
2 9 38
2 10 11
0
6 12 13 14 35 36 37
0
0
2 15 16
0
1 17
1 18
...

output:

Alice

result:

ok "Alice"

Test #114:

score: 0
Accepted
time: 0ms
memory: 17868kb

input:

100
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
3 2 3 4
0
0
0
2 6 7
0
0
1 9
1 10
0
1 12
2 13 24
4 14 15 16 21
0
0
1 17
3 18 19 20
0
0
0
2 22 23
...

output:

Bob

result:

ok "Bob"

Test #115:

score: 0
Accepted
time: 0ms
memory: 15896kb

input:

100
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 2
0
1 4
2 5 6
0
0
1 8
1 9
4 10 12 56 57
1 11
0
1 13
1 14
2 15 16
0
2 17 18
0
3 19 32 35
2 20 3...

output:

Alice

result:

ok "Alice"

Test #116:

score: 0
Accepted
time: 2ms
memory: 17884kb

input:

100
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
4 2 5 8 10
2 3 4
0
0
1 6
1 7
0
1 9
0
1 11
0
1 13
1 14
1 15
0
1 17
0
1 19
0
1 21
1 22
1 23
6 24 2...

output:

Bob

result:

ok "Bob"

Test #117:

score: 0
Accepted
time: 2ms
memory: 18120kb

input:

1000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

output:

Alice

result:

ok "Alice"

Test #118:

score: 0
Accepted
time: 0ms
memory: 18124kb

input:

1000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

output:

Alice

result:

ok "Alice"

Test #119:

score: -20
Wrong Answer
time: 0ms
memory: 17864kb

input:

1000
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

output:

Alice

result:

wrong answer 1st words differ - expected: 'Bob', found: 'Alice'

Subtask #5:

score: 0
Skipped

Dependency #4:

0%

Subtask #6:

score: 0
Skipped

Dependency #1:

0%