oj.uz

Submission #456436

# Submission time Handle Problem Language Result Execution time Memory
456436 2021-08-06T17:38:37 Z Tenis0206 Game (eJOI20_game) C++11
60 / 100
 500 ms 332 KB 
#include <bits/stdc++.h>

using namespace std;
const int oo = 0x3f3f3f3f;
int n,m;
bool sus[105][105],st[105][105];
int sel[105][105];
bool loop = false;
int nr = 0;
int cnt = 0;
vector<pair<int,int>> c;
int p[105];
void Fill(int i, int j, int si, int sj)
{
    ++nr;
    sel[i][j] = cnt;
    if(!sus[i][j] && i-1>0)
    {
        if(sel[i-1][j])
        {
            if(sel[i-1][j]==cnt && (i-1!=si || j!=sj))
            {
                loop = true;
            }
        }
        else
        {
            Fill(i-1,j,i,j);
        }
    }
    if(!sus[i+1][j] && i+1<=n)
    {
        if(sel[i+1][j])
        {
            if(sel[i+1][j]==cnt && (i+1!=si || j!=sj))
            {
                loop = true;
            }
        }
        else
        {
            Fill(i+1,j,i,j);
        }
    }
    if(!st[i][j] && j-1>0)
    {
        if(sel[i][j-1])
        {
            if(sel[i][j-1]==cnt && (i!=si || j-1!=sj))
            {
                loop = true;
            }
        }
        else
        {
            Fill(i,j-1,i,j);
        }
    }
    if(!st[i][j+1] && j+1<=m)
    {
        if(sel[i][j+1])
        {
            if(sel[i][j+1]==cnt && (i!=si || j+1!=sj))
            {
                loop = true;
            }
            return;
        }
        else
        {
            Fill(i,j+1,i,j);
        }
    }
}
int Back(int k, bool turn, int last)
{
    bool done1 = false, done2 = false;
    if(turn==1)
    {
        int Max = -oo;
        for(int i=0;i<c.size();i++)
        {
            if(i>0 && c[i]==c[i-1] && p[i]==p[i-1])
            {
                continue;
            }
            if(c[i].second==true)
            {
                if(p[i]==0 && last)
                {
                    p[i] = 1;
                    Max = max(Max,Back(k+1,0,0));
                    p[i] = 0;
                }
                else if(p[i]==1)
                {
                    p[i] = 3;
                    Max = max(Max,Back(k+1,1,1)+c[i].first);
                    p[i] = 1;
                    if(c[i].first>4)
                    {
                        p[i] = 2;
                        Max = max(Max,Back(k+1,0,1)+c[i].first-4);
                        p[i] = 1;
                    }
                }
                else if(p[i]==2 && !done2)
                {
                    done2 = true;
                    p[i] = 3;
                    Max = max(Max,Back(k+1,1,1)+4);
                    p[i] = 2;
                }
            }
            else
            {
                if(p[i]==0 && last)
                {
                    p[i] = 1;
                    Max = max(Max,Back(k+1,0,0));
                    p[i] = 0;
                }
                else if(p[i]==1)
                {
                    p[i] = 3;
                    Max = max(Max,Back(k+1,1,1)+c[i].first);
                    p[i] = 1;
                    if(c[i].first>2)
                    {
                        p[i] = 2;
                        Max = max(Max,Back(k+1,0,1)+c[i].first-2);
                        p[i] = 1;
                    }
                }
                else if(p[i]==2 && !done1)
                {
                    done1 = true;
                    p[i] = 3;
                    Max = max(Max,Back(k+1,1,1)+2);
                    p[i] = 2;
                }
            }
        }
        if(Max==-oo)
        {
            Max = 0;
        }
        return Max;
    }
    else
    {
        int Min = oo;
        for(int i=0;i<c.size();i++)
        {
            if(i>0 && c[i]==c[i-1] && p[i]==p[i-1])
            {
                continue;
            }
            if(c[i].second==true)
            {
                if(p[i]==0 && last)
                {
                    p[i] = 1;
                    Min = min(Min,Back(k+1,1,0));
                    p[i] = 0;
                }
                else if(p[i]==1)
                {
                    p[i] = 3;
                    Min = min(Min,Back(k+1,0,1)-c[i].first);
                    p[i] = 1;
                    if(c[i].first>4)
                    {
                        p[i] = 2;
                        Min = min(Min,Back(k+1,1,1)-(c[i].first-4));
                        p[i] = 1;
                    }
                }
                else if(p[i]==2 && !done2)
                {
                    done2 = true;
                    p[i] = 3;
                    Min = min(Min,Back(k+1,0,1)-4);
                    p[i] = 2;
                }
            }
            else
            {
                if(p[i]==0 && last)
                {
                    p[i] = 1;
                    Min = min(Min,Back(k+1,1,0));
                    p[i] = 0;
                }
                else if(p[i]==1)
                {
                    p[i] = 3;
                    Min = min(Min,Back(k+1,0,1)-c[i].first);
                    p[i] = 1;
                    if(c[i].first>2)
                    {
                        p[i] = 2;
                        Min = min(Min,Back(k+1,1,1)-(c[i].first-2));
                        p[i] = 1;
                    }
                }
                else if(p[i]==2 && !done1)
                {
                    done1 = true;
                    p[i] = 3;
                    Min = min(Min,Back(k+1,0,1)-2);
                    p[i] = 2;
                }
            }
        }
        if(Min==oo)
        {
            Min = 0;
        }
        return Min;
    }
}
void debug(vector<pair<int,int>> v)
{
    for(auto it : v)
    {
        cerr<<it.first<<' '<<it.second<<'\n';
    }
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>m;
    for(int i=1; i<=n+1; i++)
    {
        for(int j=1; j<=m; j++)
        {
            char ch;
            cin>>ch;
            sus[i][j] = ch-'0';
        }
    }
    for(int i=1; i<=n; i++)
    {
        for(int j=1; j<=m+1; j++)
        {
            char ch;
            cin>>ch;
            st[i][j] = ch-'0';
        }
    }
    for(int i=1; i<=n; i++)
    {
        for(int j=1; j<=m; j++)
        {
            if(sus[i][j] && sus[i+1][j] && st[i][j] && st[i][j+1])
            {
                sel[i][j] = -1;
                continue;
            }
            if(sel[i][j])
            {
                continue;
            }
            nr = 0;
            ++cnt;
            loop = false;
            Fill(i,j,0,0);
            c.push_back({nr,loop});
        }
    }
    sort(c.begin(),c.end());
    cout<<Back(1,1,-1)<<'\n';
    return 0;
}

Compilation message

game.cpp: In function 'int Back(int, bool, int)':
game.cpp:81:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |         for(int i=0;i<c.size();i++)
      |                     ~^~~~~~~~~
game.cpp:153:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  153 |         for(int i=0;i<c.size();i++)
      |                     ~^~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 2 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 0 ms 332 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 0 ms 332 KB Output is correct
22 Correct 0 ms 332 KB Output is correct
23 Correct 0 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1088 ms 204 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 332 KB Output is correct
21 Correct 2 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 0 ms 332 KB Output is correct
28 Correct 0 ms 332 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 0 ms 332 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 0 ms 332 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 0 ms 332 KB Output is correct
37 Correct 0 ms 332 KB Output is correct
38 Correct 0 ms 332 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 0 ms 332 KB Output is correct
41 Correct 0 ms 204 KB Output is correct
42 Correct 0 ms 332 KB Output is correct
43 Correct 0 ms 332 KB Output is correct
44 Correct 0 ms 332 KB Output is correct
45 Correct 0 ms 332 KB Output is correct
46 Correct 0 ms 332 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 0 ms 332 KB Output is correct
50 Correct 0 ms 332 KB Output is correct
51 Execution timed out 1088 ms 204 KB Time limit exceeded
52 Halted 0 ms 0 KB -