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답안 #75622

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
75622 2018-09-10T14:26:22 Z vex Dango Maker (JOI18_dango_maker) C++14
13 / 100
 75 ms 71472 KB 
/*
7 7
RGWRGWR
GWRGWRG
WRGWRGW
RGWRGWR
GWRGWRG
WRGWRGW
RGWRGWR
*/

#include <bits/stdc++.h>
#define maxn 3005
#define maxnode maxn*maxn/3
#define INF 1000000000
using namespace std;

int n,m;
char a[maxn][maxn];

int r[maxn][maxn];
int d[maxn][maxn];

int uk=0;
vector<int>adj[maxnode];

int dp[maxnode][2];
bool bio[maxnode];

int cyc=0;
int t[maxnode];
int lu[maxnode/4];
int ld[maxnode/4];
int ru[maxnode/4];
int rd[maxnode/4];
int dpcyc[maxnode/4][9];
//kolicnik gore
//ostatak dole
bool bcyc[maxnode/4];

bool proso(int v)
{
    if(bio[v])return true;
    if(t[v]!=-1 && bcyc[t[v]])return true;
    return false;
}
void dfs(int v)
{
    dp[v][0]=0;
    dp[v][1]=1;
    bio[v]=true;

    if(t[v]!=-1)
    {
        int tt=t[v];
        bcyc[tt]=true;

        for(auto x:adj[ld[tt]])
        {
            if(proso(x))continue;

            dfs(x);
            for(int k=0;k<9;k++)
            {
                if(k%3!=1)dpcyc[tt][k]+=max(dp[x][0],dp[x][1]);
                else dpcyc[tt][k]+=dp[x][0];
            }
        }
        for(auto x:adj[lu[tt]])
        {
            if(proso(x))continue;

            dfs(x);
            for(int k=0;k<9;k++)
            {
                if(k/3!=1)dpcyc[tt][k]+=max(dp[x][0],dp[x][1]);
                else dpcyc[tt][k]+=dp[x][0];
            }
        }
        for(auto x:adj[rd[tt]])
        {
            if(proso(x))continue;

            dfs(x);
            for(int k=0;k<9;k++)
            {
                if(k%3!=2)dpcyc[tt][k]+=max(dp[x][0],dp[x][1]);
                else dpcyc[tt][k]+=dp[x][0];
            }
        }
        for(auto x:adj[ru[tt]])
        {
            if(proso(x))continue;

            dfs(x);
            for(int k=0;k<9;k++)
            {
                if(k/3!=2)dpcyc[tt][k]+=max(dp[x][0],dp[x][1]);
                else dpcyc[tt][k]+=dp[x][0];
            }
        }
    }
    else{
        for(auto x:adj[v])
        {
            if(proso(x))continue;

            dfs(x);
            if(t[x]!=-1)
            {
                int tt=t[x];

                if(x==lu[tt])
                {
                    int dod0=0;
                    int dod1=0;
                    for(int k=0;k<9;k++)
                    {
                        dod0=max(dod0,dpcyc[tt][k]);
                        if(k/3!=1)dod1=max(dod1,dpcyc[tt][k]);
                    }
                    dp[v][0]+=dod0;
                    dp[v][1]+=dod1;
                }

                if(x==ld[tt])
                {
                    int dod0=0;
                    int dod1=0;
                    for(int k=0;k<9;k++)
                    {
                        dod0=max(dod0,dpcyc[tt][k]);
                        if(k%3!=1)dod1=max(dod1,dpcyc[tt][k]);
                    }
                    dp[v][0]+=dod0;
                    dp[v][1]+=dod1;
                }

                if(x==rd[tt])
                {
                    int dod0=0;
                    int dod1=0;
                    for(int k=0;k<9;k++)
                    {
                        dod0=max(dod0,dpcyc[tt][k]);
                        if(k%3!=2)dod1=max(dod1,dpcyc[tt][k]);
                    }
                    dp[v][0]+=dod0;
                    dp[v][1]+=dod1;
                }

                if(x==ru[tt])
                {
                    int dod0=0;
                    int dod1=0;
                    for(int k=0;k<9;k++)
                    {
                        dod0=max(dod0,dpcyc[tt][k]);
                        if(k/3!=2)dod1=max(dod1,dpcyc[tt][k]);
                    }
                    dp[v][0]+=dod0;
                    dp[v][1]+=dod1;
                }
            }

            else
            {
                dp[v][0]+=max(dp[x][0],dp[x][1]);
                dp[v][1]+=dp[x][0];
            }
        }
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    cin>>n>>m;
    for(int i=0;i<n;i++)for(int j=0;j<m;j++)cin>>a[i][j];

    for(int i=0;i<n;i++)for(int j=0;j<m;j++)
    {
        if(j+2<m && a[i][j]=='R' && a[i][j+1]=='G' && a[i][j+2]=='W')
        {
            r[i][j]=uk;
            uk++;
        }
        else r[i][j]=-1;

        if(i+2<n && a[i][j]=='R' && a[i+1][j]=='G' && a[i+2][j]=='W')
        {
            d[i][j]=uk;
            uk++;
        }
        else d[i][j]=-1;
    }

    for(int i=0;i<uk;i++)t[i]=-1;

    for(int i=0;i<n;i++)for(int j=0;j<m;j++)
    {
        if(d[i][j]!=-1)
        {
            if(r[i][j]!=-1)adj[d[i][j]].push_back(r[i][j]);
            if(j-1>=0 && r[i+1][j-1]!=-1)adj[d[i][j]].push_back(r[i+1][j-1]);
            if(j-2>=0 && r[i+2][j-2]!=-2)adj[d[i][j]].push_back(r[i+2][j-2]);

            if(i+2<n && j-2>=0 && r[i+1][j-1]!=-1 && r[i+2][j-2]!=-1 && d[i+1][j-1]!=-1)
            {
                int xx=d[i][j];
                int yy=r[i+1][j-1];
                int zz=r[i+2][j-2];
                int tt=d[i+1][j-1];

                int br=t[xx];
                if(t[yy]!=-1)br=t[yy];
                if(t[zz]!=-1)br=t[zz];
                if(t[tt]!=-1)br=t[tt];

                if(br!=-1 && br==t[xx] && br==t[yy] && br==t[zz] && br==t[tt]){}
                else
                {
                    if(br==-1)
                    {
                        br=cyc;
                        cyc++;

                        lu[br]=xx;
                        ru[br]=yy;

                        for(int k=0;k<9;k++)
                        {
                            if(k%3==0 && k/3==0)dpcyc[br][k]=0;
                            else if(k%3==0 || k/3==0)dpcyc[br][k]=1;
                            else if(k/3==k%3)dpcyc[br][k]=-INF;
                            else dpcyc[br][k]=2;
                        }
                    }
                    else
                    {
                        int asd[9];
                        for(int k=0;k<9;k++)
                        {
                            if(k%3==0 || k/3==0)asd[k]=dpcyc[br][k]+1;
                            else
                            {
                                int maxx=0;
                                for(int kk=0;kk<9;kk++)if(k/3==kk/3 && kk%3!=k%3 && maxx<dpcyc[br][kk])maxx=dpcyc[br][kk];
                                asd[k]=maxx+1;
                            }
                        }
                        for(int k=0;k<9;k++)dpcyc[br][k]=asd[k];
                    }

                    t[xx]=t[yy]=t[zz]=t[tt]=br;

                    rd[br]=tt;
                    ld[br]=zz;
                }
            }
        }

        if(r[i][j]!=-1)
        {
            if(d[i][j]!=-1)adj[r[i][j]].push_back(d[i][j]);
            if(i-1>=0 && d[i-1][j+1]!=-1)adj[r[i][j]].push_back(d[i-1][j+1]);
            if(i-2>=0 && d[i-2][j+2]!=-1)adj[r[i][j]].push_back(d[i-2][j+2]);

            if(i+1<n && i-1>=0 && j+1<m && j-1>=0 && d[i-1][j+1]!=-1 && r[i+1][j-1]!=-1 && d[i][j]!=-1)
            {
                int xx=d[i-1][j+1];
                int yy=r[i][j];
                int zz=r[i+1][j-1];
                int tt=d[i][j];

                int br=t[xx];
                if(t[yy]!=-1)br=t[yy];
                if(t[zz]!=-1)br=t[zz];
                if(t[tt]!=-1)br=t[tt];

                if(br!=-1 && br==t[xx] && br==t[yy] && br==t[zz] && br==t[tt])continue;

                if(br==-1)
                {
                    br=cyc;
                    cyc++;

                    lu[br]=xx;
                    ru[br]=yy;

                    for(int k=0;k<9;k++)
                    {
                        if(k%3==0 && k/3==0)dpcyc[br][k]=0;
                        else if(k%3==0 || k/3==0)dpcyc[br][k]=1;
                        else if(k/3==k%3)dpcyc[br][k]=-INF;
                        else dpcyc[br][k]=2;
                    }
                }
                else
                {
                    int asd[9];
                    for(int k=0;k<9;k++)
                    {
                        if(k%3==0 || k/3==0)asd[k]=dpcyc[br][k]+1;
                        else
                        {
                            int maxx=0;
                            for(int kk=0;kk<9;kk++)if(kk%3!=k%3 && maxx<dpcyc[br][kk])maxx=dpcyc[br][kk];
                            asd[k]=maxx+1;
                        }
                    }
                    for(int k=0;k<9;k++)dpcyc[br][k]=asd[k];
                }

                t[xx]=t[yy]=t[zz]=t[tt]=br;

                rd[br]=tt;
                ld[br]=zz;
            }
        }
    }

    /*for(int i=0;i<uk;i++)
    {
        cout<<i<<"   ";
        for(auto x:adj[i])cout<<x<<" ";
        cout<<endl;
    }cout<<endl;

    cout<<cyc<<endl;
    for(int i=0;i<cyc;i++)
    {
        cout<<i<<"   ";
        for(int k=0;k<9;k++)cout<<dpcyc[i][k]<<" ";
        cout<<endl;
    }cout<<endl;*/

    int sol=0;
    for(int i=0;i<uk;i++)bio[i]=false;
    for(int i=0;i<cyc;i++)bcyc[i]=false;
    for(int i=0;i<uk;i++)if(!proso(i))
    {
        dfs(i);
        int dod;
        if(t[i]==-1)dod=max(dp[i][0],dp[i][1]);
        else{
            int maxx=0;
            for(int k=0;k<9;k++)if(maxx<dpcyc[t[i]][k])maxx=dpcyc[t[i]][k];
            dod=maxx;
        }

        sol+=dod;
        //cout<<i<<" "<<dod<<endl;
    }//cout<<endl;

    cout<<sol<<endl;
    return 0;
}

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 71032 KB Output is correct
2 Correct 61 ms 71120 KB Output is correct
3 Correct 63 ms 71232 KB Output is correct
4 Correct 65 ms 71252 KB Output is correct
5 Correct 62 ms 71328 KB Output is correct
6 Correct 65 ms 71328 KB Output is correct
7 Correct 65 ms 71328 KB Output is correct
8 Correct 62 ms 71404 KB Output is correct
9 Correct 64 ms 71436 KB Output is correct
10 Correct 62 ms 71436 KB Output is correct
11 Correct 64 ms 71436 KB Output is correct
12 Correct 75 ms 71436 KB Output is correct
13 Correct 62 ms 71436 KB Output is correct
14 Correct 65 ms 71436 KB Output is correct
15 Correct 63 ms 71436 KB Output is correct
16 Correct 61 ms 71436 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 71032 KB Output is correct
2 Correct 61 ms 71120 KB Output is correct
3 Correct 63 ms 71232 KB Output is correct
4 Correct 65 ms 71252 KB Output is correct
5 Correct 62 ms 71328 KB Output is correct
6 Correct 65 ms 71328 KB Output is correct
7 Correct 65 ms 71328 KB Output is correct
8 Correct 62 ms 71404 KB Output is correct
9 Correct 64 ms 71436 KB Output is correct
10 Correct 62 ms 71436 KB Output is correct
11 Correct 64 ms 71436 KB Output is correct
12 Correct 75 ms 71436 KB Output is correct
13 Correct 62 ms 71436 KB Output is correct
14 Correct 65 ms 71436 KB Output is correct
15 Correct 63 ms 71436 KB Output is correct
16 Correct 61 ms 71436 KB Output is correct
17 Correct 63 ms 71436 KB Output is correct
18 Correct 64 ms 71436 KB Output is correct
19 Correct 65 ms 71444 KB Output is correct
20 Correct 65 ms 71444 KB Output is correct
21 Correct 63 ms 71472 KB Output is correct
22 Correct 63 ms 71472 KB Output is correct
23 Correct 65 ms 71472 KB Output is correct
24 Correct 63 ms 71472 KB Output is correct
25 Correct 63 ms 71472 KB Output is correct
26 Correct 63 ms 71472 KB Output is correct
27 Incorrect 66 ms 71472 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #3
0 / 67.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 71032 KB Output is correct
2 Correct 61 ms 71120 KB Output is correct
3 Correct 63 ms 71232 KB Output is correct
4 Correct 65 ms 71252 KB Output is correct
5 Correct 62 ms 71328 KB Output is correct
6 Correct 65 ms 71328 KB Output is correct
7 Correct 65 ms 71328 KB Output is correct
8 Correct 62 ms 71404 KB Output is correct
9 Correct 64 ms 71436 KB Output is correct
10 Correct 62 ms 71436 KB Output is correct
11 Correct 64 ms 71436 KB Output is correct
12 Correct 75 ms 71436 KB Output is correct
13 Correct 62 ms 71436 KB Output is correct
14 Correct 65 ms 71436 KB Output is correct
15 Correct 63 ms 71436 KB Output is correct
16 Correct 61 ms 71436 KB Output is correct
17 Correct 63 ms 71436 KB Output is correct
18 Correct 64 ms 71436 KB Output is correct
19 Correct 65 ms 71444 KB Output is correct
20 Correct 65 ms 71444 KB Output is correct
21 Correct 63 ms 71472 KB Output is correct
22 Correct 63 ms 71472 KB Output is correct
23 Correct 65 ms 71472 KB Output is correct
24 Correct 63 ms 71472 KB Output is correct
25 Correct 63 ms 71472 KB Output is correct
26 Correct 63 ms 71472 KB Output is correct
27 Incorrect 66 ms 71472 KB Output isn't correct
28 Halted 0 ms 0 KB -