Submission #407367

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
407367	2021-05-18T19:26:51 Z	Jasiekstrz	Archery (IOI09_archery)	C++17	45 / 100	2000 ms	5284 KB

archery

#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
const int N=2e5;
int tab[2*N+10];
int stationary(int n)
{
	int ans=n+1,g=n;
	for(int i=1;i<=n;i++)
	{
		vector<int> st;
		int cnt=0;
		for(int j=i+1;j<=n;j++)
		{
			if(tab[2*j-1]==-1 && tab[2*j-2]==-1)
				st.push_back(j);
			else if(tab[2*j-1]==1 && tab[2*j-2]==1)
			{
				if(st.empty())
					cnt++;
				else
					st.pop_back();
			}
		}
		if(i!=1)
		{
			if(tab[1]==1)
			{
				if(st.empty())
					cnt++;
				else
					st.pop_back();
			}
			if(tab[2]==1)
			{
				if(st.empty())
					cnt++;
				else
					st.pop_back();
			}
		}
		for(int j=2;j<i;j++)
		{
			if(tab[2*j-1]==-1 && tab[2*j]==-1)
				st.push_back(j);
			else if(tab[2*j-1]==1 && tab[2*j]==1)
			{
				if(st.empty())
					cnt++;
				else
					st.pop_back();
			}
		}
		if(i==1)
			cnt++;
		if(tab[2*i-1]==1)
			cnt++;
		st.push_back(i);
		int w=st[st.size()-1-cnt];
		if(w<ans || (w==ans && i>g))
		{
			ans=w;
			g=i;
		}
	}
	return g;
}
int moving(int n,int r)
{
	int ans=n+1,g=n;
	int fl;
	for(int i=1;i<2*n;i++)
	{
		if(tab[i]==1)
			continue;
		fl=(i+2)/2;
		break;
	}
	for(int i=fl;i<=n;i++)
	{
		vector<int> st;
		int cnt=0;
		for(int j=i-1;j>1;j--)
		{
			if(tab[2*j-1]==1 && tab[2*j-2]==1)
				st.push_back(j);
			else if(tab[2*j-1]==-1 && tab[2*j-2]==-1)
			{
				if(st.empty())
					cnt++;
				else
					st.pop_back();
			}
		}
		for(int j=n;j>i;j--)
		{
			if(tab[2*j-1]==1 && tab[2*j-2]==1)
				st.push_back(j);
			else if(tab[2*j-1]==-1 && tab[2*j-2]==-1)
			{
				if(st.empty())
					cnt++;
				else
					st.pop_back();
			}
		}
		if(i!=1 && tab[2*i-1]==-1)
			cnt++;
		st.push_back(i);
		int w=st[st.size()-1-cnt];
		w=((i-(r-(w-i))-1)%n+n)%n+1;
		if(w<ans || (w==ans && i>g))
		{
			ans=w;
			g=i;
		}
	}
	return g;
}
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int n,r,x;
	cin>>n>>r>>x;
	for(int i=1;i<2*n;i++)
	{
		cin>>tab[i];
		if(tab[i]>x)
			tab[i]=1;
		else
			tab[i]=-1;
	}
	if(x==1)
		cout<<n<<"\n";
	else if(2<=x && x<=n+1)
		cout<<moving(n,r)<<"\n";
	else
		cout<<stationary(n)<<"\n";
	return 0;
}

Compilation message

archery.cpp: In function 'int moving(int, int)':
archery.cpp:84:14: warning: 'fl' may be used uninitialized in this function [-Wmaybe-uninitialized]
   84 |   for(int j=i-1;j>1;j--)
      |             ~^~

Subtask #1

5.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Incorrect	27 ms	332 KB	Output isn't correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct

Subtask #2

40.0 / 94.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Incorrect	1 ms	204 KB	Output isn't correct
3	Incorrect	9 ms	352 KB	Output isn't correct
4	Incorrect	1866 ms	620 KB	Output isn't correct
5	Execution timed out	2086 ms	4036 KB	Time limit exceeded
6	Incorrect	1 ms	204 KB	Output isn't correct
7	Incorrect	4 ms	332 KB	Output isn't correct
8	Incorrect	880 ms	716 KB	Output isn't correct
9	Incorrect	1535 ms	760 KB	Output isn't correct
10	Incorrect	5 ms	332 KB	Output isn't correct
11	Execution timed out	2079 ms	724 KB	Time limit exceeded
12	Incorrect	30 ms	332 KB	Output isn't correct
13	Execution timed out	2005 ms	3592 KB	Time limit exceeded
14	Incorrect	103 ms	416 KB	Output isn't correct
15	Execution timed out	2087 ms	972 KB	Time limit exceeded
16	Incorrect	1 ms	204 KB	Output isn't correct
17	Incorrect	8 ms	344 KB	Output isn't correct
18	Incorrect	17 ms	332 KB	Output isn't correct
19	Incorrect	50 ms	372 KB	Output isn't correct
20	Incorrect	81 ms	332 KB	Output isn't correct
21	Incorrect	1152 ms	836 KB	Output isn't correct
22	Execution timed out	2078 ms	916 KB	Time limit exceeded
23	Execution timed out	2081 ms	4652 KB	Time limit exceeded
24	Correct	2 ms	204 KB	Output is correct
25	Correct	6 ms	332 KB	Output is correct
26	Correct	111 ms	376 KB	Output is correct
27	Execution timed out	2045 ms	740 KB	Time limit exceeded
28	Execution timed out	2067 ms	3416 KB	Time limit exceeded
29	Correct	9 ms	360 KB	Output is correct
30	Correct	100 ms	420 KB	Output is correct
31	Correct	1368 ms	716 KB	Output is correct
32	Execution timed out	2081 ms	4684 KB	Time limit exceeded
33	Correct	1 ms	204 KB	Output is correct
34	Correct	1 ms	204 KB	Output is correct
35	Correct	18 ms	372 KB	Output is correct
36	Correct	25 ms	332 KB	Output is correct
37	Correct	1008 ms	640 KB	Output is correct
38	Execution timed out	2094 ms	788 KB	Time limit exceeded
39	Correct	1 ms	204 KB	Output is correct
40	Correct	5 ms	332 KB	Output is correct
41	Correct	17 ms	364 KB	Output is correct
42	Correct	24 ms	332 KB	Output is correct
43	Correct	85 ms	404 KB	Output is correct
44	Correct	349 ms	516 KB	Output is correct
45	Correct	1375 ms	876 KB	Output is correct
46	Correct	1846 ms	732 KB	Output is correct
47	Execution timed out	2088 ms	5284 KB	Time limit exceeded