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
#346985#8224. Caught in the Middlecrsfaa0 0ms3788kbC++141.8kb2024-03-09 09:28:222024-03-09 09:28:22

Judging History

你现在查看的是最新测评结果

  • [2024-03-09 09:28:22]
  • 评测
  • 测评结果:0
  • 用时:0ms
  • 内存:3788kb
  • [2024-03-09 09:28:22]
  • 提交

answer

#include<bits/stdc++.h>
#define Yukinoshita namespace
#define Yukino std
using Yukinoshita Yukino;
int read()
{
	int s=0,w=1;
	char ch=getchar();
	while(ch<'0'||ch>'9') w=ch=='-'?-1:1,ch=getchar();
	while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
	return s*w;
}
const int mod=998244353;
int qpow(int a,int p)
{
	int mul=1;
	for(;p;p>>=1)
	{
		if(p&1) mul=1ll*mul*a%mod;
		a=1ll*a*a%mod;
	}
	return mul;
}
inline void getmod(int &x)
{
	x-=(x>=mod)*mod;
}
const int mxn=1e6+5;
int fac[mxn],inv[mxn];
void init(int n)
{
	fac[0]=1;
	int i;
	for(i=1;i<=n;i++)
		fac[i]=1ll*fac[i-1]*i%mod;
	inv[n]=qpow(fac[n],mod-2);
	for(i=n;i;i--)
		inv[i-1]=1ll*inv[i]*i%mod;
}
int C(int n,int m)
{
	return 1ll*fac[n]*inv[m]%mod*inv[n-m]%mod;
}
struct seg
{
	int l,r,tag;
}t[mxn*4];
#define ls w<<1
#define rs ls|1
void build(int w,int l,int r)
{
	t[w].l=l,t[w].r=r;
	if(l<r)
	{
		int mid=l+r>>1;
		build(ls,l,mid);
		build(rs,mid+1,r);
	}
}
void pushup(int w)
{
	
}
void ad(int w,int v)
{
	
}
void pushdown(int w)
{
	if(t[w].tag)
		ad(ls,t[w].tag),ad(rs,t[w].tag),t[w].tag=0;	
}
int ask(int w,int l,int r)
{
	if(t[w].l>=l&&t[w].r<=r) return 0;
	pushdown(w);
	int s=0;
	if(t[ls].r>=l) s=ask(ls,l,r);
	if(t[rs].l<=r) s+=ask(rs,l,r);
	return s;
}
void add(int w,int l,int r,int v)
{
	if(t[w].l>=l&&t[w].r<=r)
	{
		ad(w,v);
		return;
	}
	pushdown(w);
	if(t[ls].r>=l) add(ls,l,r,v);
	if(t[rs].l<=r) add(rs,l,r,v);
	pushup(w);
}
char s[mxn];
int main()
{
	int T=read();
	while(T--)
	{
		int n=read(),i;
		scanf("%s",s+1);
		if(n&1)
		{
			puts("Alice");
			continue;
		}
		for(i=1;i<=n;i++)
			if(i%2&&s[i]=='L'||i%2==0&&s[i]=='R')
			{
				puts("Alice");
				goto bre;
			}
		puts("Bob");		
		bre:;
	}
}

详细

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 0
Wrong Answer
time: 0ms
memory: 3788kb

input:

20
10
RLRRRRLLRR
10
LRLLLLRRLR
6
RLRLRL
10
LLRLRRRRLR
6
LRRLLL
3
RLR
5
LLRRR
6
RRRRRL
9
LRRRLRRLR
1
R
10
RRRLLRRLLL
6
LRLLLR
9
LLRLRLRLR
7
RRRRLRR
2
LL
10
RRRLLRRLRR
2
RL
7
RRLRRLR
3
LLR
10
LLRLRRRLLR

output:

Alice
Alice
Bob
Alice
Alice
Alice
Alice
Alice
Alice
Alice
Alice
Alice
Alice
Alice
Alice
Alice
Bob
Alice
Alice
Alice

result:

wrong answer 11th lines differ - expected: 'Bob', found: 'Alice'

Subtask #2:

score: 0
Skipped

Dependency #1:

0%

Subtask #3:

score: 0
Skipped

Dependency #1:

0%

Subtask #4:

score: 0
Skipped

Dependency #1:

0%