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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#289007#7863. Parity Gameucup-team266#WA 1ms3392kbC++203.4kb2023-12-23 14:43:072023-12-23 14:43:07

Judging History

你现在查看的是最新测评结果

  • [2023-12-23 14:43:07]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3392kb
  • [2023-12-23 14:43:07]
  • 提交

answer

/*
Things to notice:
1. do not calculate useless values
2. do not use similar names
 
Things to check:
1. submit the correct file
2. time (it is log^2 or log)
3. memory
4. prove your naive thoughts 
5. long long
6. corner case like n=0,1,inf or n=m
7. check if there is a mistake in the ds or other tools you use
8. fileio in some oi-contest

9. module on time 
10. the number of a same divisor in a math problem
11. multi-information and queries for dp and ds problems
*/
#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pii pair<int,int>
#define mp make_pair
#define pb push_back
const int mod=998244353;
const int inf=0x3f3f3f3f;
int n,T;
vector <int> a;
void era(int x)
{
	if(a[x]==1)
	{
		if(x+1<=n) cout<<x<<" *\n";
		else cout<<x-1<<" *\n";
		fflush(stdout);
		a.erase(a.begin()+x);
	}
	else
	{
		if(x+1<=n) cout<<x<<" +\n";
		else cout<<x-1<<" +\n";
		fflush(stdout);
		a.erase(a.begin()+x);
	}
	n--;
}
void Alice0()
{
	cout<<"Alice\n";
	fflush(stdout);
	int op=0;
	while(n>1)
	{
		if(op==0)
		{
			int flg=0;
			for(int i=1;i<n;i++) if(a[i]==1&&a[i+1]==1)
			{
				cout<<i<<" "<<"+\n";
				fflush(stdout);
				flg=1;
				a.erase(a.begin()+i),n--;
				a[i]=0;
				break;
			}
			if(!flg)
			{
				int del=1;
				for(int i=1;i<=n;i++) if(a[i]==1) del=i;
				era(del);
			}
		}
		else
		{
			int x;
			cin>>x;
			char o;
			cin>>o;
			if(o=='+') a[x]=(a[x]+a[x+1])%2,a.erase(a.begin()+x+1);
			else a[x]=a[x]*a[x+1],a.erase(a.begin()+x+1);
			n--;
		}
		op^=1;
	}
}
void Bob0()
{
	cout<<"Bob\n";
	fflush(stdout);
	int op=1;
	int lstpos=-1;
	while(n>1)
	{
		if(op==0)
		{
//			cout<<"... "<<lstpos<<"\n";
			era(lstpos);
		}
		else
		{
			int x;
			cin>>x;
			char o;
			cin>>o;
			if(o=='+') a[x]=(a[x]+a[x+1])%2,a.erase(a.begin()+x+1);
			else a[x]=a[x]*a[x+1],a.erase(a.begin()+x+1);
			n--;
			lstpos=x;
		}
		op^=1;
	}
}
void Bob1()
{
	cout<<"Bob\n";
	fflush(stdout);
	int op=1;
	while(n>1)
	{
		if(op==0)
		{
			int flg=0;
			for(int i=1;i<n;i++) if(a[i]==1&&a[i+1]==1)
			{
				cout<<i<<" "<<"+\n";
				fflush(stdout);
				flg=1;
				a.erase(a.begin()+i),n--;
				a[i]=0;
				break;
			}
			if(!flg)
			{
				int del=1;
				for(int i=1;i<=n;i++) if(a[i]==1) del=i;
				era(del);
			}
		}
		else
		{
			int x;
			cin>>x;
			char o;
			cin>>o;
			if(o=='+') a[x]=(a[x]+a[x+1])%2,a.erase(a.begin()+x+1);
			else a[x]=a[x]*a[x+1],a.erase(a.begin()+x+1);
			n--;
		}
		op^=1;
	}
}
void Alice1()
{
	cout<<"Alice\n";
	fflush(stdout);
	int p=1;
	int lstpos=-1;
	for(int i=1;i<=n;i++) if(a[i]) p=i;
	era(p);
	int op=1;
	while(n>1)
	{
		if(op==0)
		{
			era(lstpos);
		}
		else
		{
			int x;
			cin>>x;
			char o;
			cin>>o;
			if(o=='+') a[x]=(a[x]+a[x+1])%2,a.erase(a.begin()+x+1);
			else a[x]=a[x]*a[x+1],a.erase(a.begin()+x+1);
			n--;
			lstpos=x;
		}
		op^=1;
	}
}

void solve()
{
	cin>>n>>T;
	a.pb(-1);
	int c0=0,c1=0;
	for(int i=1;i<=n;i++)
	{
		int x;
		cin>>x;
		a.pb(x);
		if(x==0) c0++;
		else c1++;
	}
	if(T==0)
	{
		if(c0) Alice0();
		else if(c1%2==0) Alice0(); 
		else Bob0();
	}
	else
	{
		if(c0>=2) Bob1();
		else if(c0==0)
		{
			if(c1%2==1) Bob1();
			else Alice1();
		}
		else
		{
			if(c1%2==1) Alice1();
			else Bob1();
		}
	}
}
signed main()
{
//	ios::sync_with_stdio(0);
//	cin.tie(0);
	int _=1;
//	cin>>_;
	while(_--) solve();
	return 0;
}

Details

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Test #1:

score: 0
Wrong Answer
time: 1ms
memory: 3392kb

input:

4 1
0 1 0 1
1 +
1 +
0

output:

Bob
2 *

result:

wrong answer The interactor wins!