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
#396905#4896. Alice、Bob 与 DFSchenxinyang20060 3ms8588kbC++141.4kb2024-04-23 13:53:322024-04-23 13:53:34

Judging History

你现在查看的是最新测评结果

  • [2024-04-23 13:53:34]
  • 评测
  • 测评结果:0
  • 用时:3ms
  • 内存:8588kb
  • [2024-04-23 13:53:32]
  • 提交

answer

#include <bits/stdc++.h>
#define rep(i,j,k) for(int i=(j);i<=(k);i++)
#define per(i,j,k) for(int i=(j);i>=(k);i--)
#define uint unsigned int
#define ll long long
#define ull unsigned long long
#define db double
#define ldb long double
#define pii pair<int,int>
#define pll pair<ll,ll>
#define mkp make_pair
#define eb emplace_back
#define SZ(S) (int)S.size()
//#define mod 998244353
//#define mod 1000000007
#define inf 0x3f3f3f3f
#define linf 0x3f3f3f3f3f3f3f3f
using namespace std;

template <class T>
void chkmax(T &x,T y){
	if(x < y) x = y;
}

template <class T>
void chkmin(T &x,T y){
	if(x > y) x = y;
}

inline int popcnt(int x){
	return __builtin_popcount(x);
}

inline int ctz(int x){
	return __builtin_ctz(x);
}


/*ll power(ll p,int k = mod - 2){
	ll ans = 1;
	while(k){
		if(k % 2 == 1) ans = ans * p % mod;
		p = p * p % mod;
		k /= 2;	
	}
	return ans;
}*/
int n,k;
int a[200005],r[200005];
vector <int> G[200005];
int dp[200005];

int main(){
	scanf("%d",&n);
	rep(u,1,n) scanf("%d",&a[u]);
	rep(u,1,n){
		int m,v;
		scanf("%d",&m);
		while(m--){
			scanf("%d",&v);
			G[u].eb(v);
		}
	}
	per(u,n,1){
		for(int v:G[u]) dp[u] ^= dp[v] ^ 1;
	}
	int ans = 0;
	scanf("%d",&k);
	rep(i,1,k){
		scanf("%d",&r[i]);
		ans ^= dp[r[i]] ^ 1;
	}
	if(ans) printf("Bob\n");
	else printf("Alice\n"); 
	return 0;
}

詳細信息

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 0
Wrong Answer
time: 0ms
memory: 8500kb

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:

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

Subtask #2:

score: 0
Wrong Answer

Test #18:

score: 15
Accepted
time: 0ms
memory: 8532kb

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: 0
Wrong Answer
time: 3ms
memory: 8468kb

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: 3ms
memory: 8580kb

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: 0
Wrong Answer
time: 0ms
memory: 8588kb

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: 3ms
memory: 8456kb

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: 20
Accepted
time: 2ms
memory: 8508kb

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: 20
Accepted
time: 2ms
memory: 8468kb

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
Wrong Answer
time: 2ms
memory: 8512kb

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:

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:

0%