oj.uz

Submission #161620

# Submission time Handle Problem Language Result Execution time Memory
161620 2019-11-03T10:09:57 Z MvC Red-blue table (IZhO19_stones) C++11
100 / 100
 113 ms 6516 KB 
#pragma GCC target("avx2")
#pragma GCC optimization("O3")
#pragma GCC optimization("unroll-loops")
#include <bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
using namespace std;
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=1e3+50;
const int mod=1e9+7;
int ts,i,j,t,cic[nmax],nr[nmax],tr,cur,rs,n,m,rs1;
vector<int>vc[nmax];
char c[nmax][nmax],ma[nmax][nmax],mb[nmax][nmax];
int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>ts;
	while(ts--)
	{
		cin>>n>>m;
		rs=max(n,m);
		for(i=1;i<=n;i++)for(j=1;j<=m;j++)c[i][j]='-';
		for(i=1;i<=m;i++)nr[i]=cic[i]=0;
		for(i=1;i<=n;i++)
		{
			for(j=0;j<=n;j++)vc[j].clear();
			for(j=1;j<=m;j++)
			{
				if(nr[j]>n-n/2-1)cic[j]=1;
				if(!cic[j])vc[nr[j]].pb(j);
			}
			tr=m/2+1;
			for(j=1;j<=m;j++)
			{
				if(!tr)break;
				if(cic[j])
				{
					nr[j]++;
					tr--;
					c[i][j]='+';
				}
			}
			for(j=0;j<=n;j++)
			{
				if(!tr)break;
				for(t=0;t<(int)vc[j].size();t++)
				{
					if(!tr)break;
					c[i][vc[j][t]]='+';
					nr[vc[j][t]]++;
					tr--;
				}
			}
			cur=0;
			for(j=1;j<=m;j++)if(nr[j]<=n-n/2-1)cur++;
			rs=max(rs,cur+i);
		}
		if(rs==n)for(i=1;i<=n;i++)for(j=1;j<=m;j++)c[i][j]='+';
		if(rs==m)for(i=1;i<=n;i++)for(j=1;j<=m;j++)c[i][j]='-';
		if(rs==max(n,m))
		{
			cout<<rs<<'\n';
			for(i=1;i<=n;i++)
			{
				for(j=1;j<=m;j++)cout<<c[i][j];
				cout<<'\n';
			}
			continue;
		}
		for(i=1;i<=n;i++)for(j=1;j<=m;j++)c[i][j]='-';
		for(i=1;i<=m;i++)nr[i]=cic[i]=0;
		for(i=1;i<=n;i++)
		{
			for(j=0;j<=n;j++)vc[j].clear();
			for(j=1;j<=m;j++)
			{
				if(nr[j]>n-n/2-1)cic[j]=1;
				if(!cic[j])vc[nr[j]].pb(j);
			}
			tr=m/2+1;
			for(j=1;j<=m;j++)
			{
				if(!tr)break;
				if(cic[j])
				{
					nr[j]++;
					tr--;
					c[i][j]='+';
				}
			}
			for(j=0;j<=n;j++)
			{
				if(!tr)break;
				for(t=0;t<(int)vc[j].size();t++)
				{
					if(!tr)break;
					c[i][vc[j][t]]='+';
					nr[vc[j][t]]++;
					tr--;
				}
			}
			cur=0;
			for(j=1;j<=m;j++)if(nr[j]<=n-n/2-1)cur++;
			if(cur+i==rs)
			{
				for(i=1;i<=n;i++)for(j=1;j<=m;j++)ma[i][j]=c[i][j];
				break;
			}
		}
		rs1=max(n,m);
		for(i=1;i<=n;i++)for(j=1;j<=m;j++)c[i][j]='+';
		for(i=1;i<=n;i++)nr[i]=cic[i]=0;
		for(i=1;i<=m;i++)
		{
			for(j=0;j<=m;j++)vc[j].clear();
			for(j=1;j<=n;j++)
			{
				if(nr[j]>m-m/2-1)cic[j]=1;
				if(!cic[j])vc[nr[j]].pb(j);
			}
			tr=n/2+1;
			for(j=1;j<=n;j++)
			{
				if(!tr)break;
				if(cic[j])
				{
					nr[j]++;
					tr--;
					c[j][i]='-';
				}
			}
			for(j=0;j<=m;j++)
			{
				if(!tr)break;
				for(t=0;t<(int)vc[j].size();t++)
				{
					if(!tr)break;
					c[vc[j][t]][i]='-';
					nr[vc[j][t]]++;
					tr--;
				}
			}
			cur=0;
			for(j=1;j<=n;j++)if(nr[j]<=m-m/2-1)cur++;
			rs1=max(rs1,cur+i);
		}
		for(i=1;i<=n;i++)for(j=1;j<=m;j++)c[i][j]='+';
		for(i=1;i<=n;i++)nr[i]=cic[i]=0;
		for(i=1;i<=m;i++)
		{
			for(j=0;j<=m;j++)vc[j].clear();
			for(j=1;j<=n;j++)
			{
				if(nr[j]>m-m/2-1)cic[j]=1;
				if(!cic[j])vc[nr[j]].pb(j);
			}
			tr=n/2+1;
			for(j=1;j<=n;j++)
			{
				if(!tr)break;
				if(cic[j])
				{
					nr[j]++;
					tr--;
					c[j][i]='-';
				}
			}
			for(j=0;j<=m;j++)
			{
				if(!tr)break;
				for(t=0;t<(int)vc[j].size();t++)
				{
					if(!tr)break;
					c[vc[j][t]][i]='-';
					nr[vc[j][t]]++;
					tr--;
				}
			}
			cur=0;
			for(j=1;j<=n;j++)if(nr[j]<=m-m/2-1)cur++;
			if(cur+i==rs1)
			{
				for(i=1;i<=n;i++)for(j=1;j<=m;j++)mb[i][j]=c[i][j];
				break;
			}
		}
		if(rs>rs1)
		{
			cout<<rs<<'\n';
			for(i=1;i<=n;i++)
			{
				for(j=1;j<=m;j++)cout<<ma[i][j];
				cout<<'\n';
			}
		}
		else
		{
			cout<<rs1<<'\n';
			for(i=1;i<=n;i++)
			{
				for(j=1;j<=m;j++)cout<<mb[i][j];
				cout<<'\n';
			}
		}
	}
	return 0;
}

Compilation message

stones.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("O3")
 
stones.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("unroll-loops")

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 508 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 4 ms 508 KB Output is correct
4 Correct 7 ms 632 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 105 ms 1756 KB Output is correct
2 Correct 99 ms 5476 KB Output is correct
3 Correct 100 ms 6008 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 2064 KB Output is correct
2 Correct 89 ms 4984 KB Output is correct
3 Correct 86 ms 3832 KB Output is correct

Subtask #6
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 4 ms 508 KB Output is correct
4 Correct 7 ms 632 KB Output is correct
5 Correct 105 ms 1756 KB Output is correct
6 Correct 99 ms 5476 KB Output is correct
7 Correct 100 ms 6008 KB Output is correct
8 Correct 102 ms 2064 KB Output is correct
9 Correct 89 ms 4984 KB Output is correct
10 Correct 86 ms 3832 KB Output is correct
11 Correct 26 ms 760 KB Output is correct
12 Correct 86 ms 5060 KB Output is correct
13 Correct 91 ms 5240 KB Output is correct
14 Correct 69 ms 4216 KB Output is correct
15 Correct 113 ms 6516 KB Output is correct
16 Correct 88 ms 5496 KB Output is correct
17 Correct 40 ms 3960 KB Output is correct