oj.uz

Submission #457846

# Submission time Handle Problem Language Result Execution time Memory
457846 2021-08-07T12:36:28 Z Tenis0206 Game (eJOI20_game) C++11
80 / 100
 500 ms 43756 KB 
#include <bits/stdc++.h>

using namespace std;
const int limit = 100000;
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;
unordered_map<string,short int> rez[2];
unordered_map<string,bool> reached[2];
int nrop = 0;
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 turn, string state)
{
    ++nrop;
    reached[turn][state] = true;
    if(turn)
    {
        int Max = -oo;
        for(int i=0; i<c.size(); i++)
        {
            if(state[i]=='1')
            {
                continue;
            }
            int Min = oo;
            string new_state = state;
            new_state[i] = '1';
            if(reached[0][new_state])
            {
                Min = min(Min,rez[0][new_state] - c[i].first);
            }
            else
            {
                Min = min(Min,Back(0,new_state) - c[i].first);
            }
            if(c[i].second==false && c[i].first>2)
            {
                if(reached[1][new_state])
                {
                    Min = min(Min,rez[1][new_state] - c[i].first + 4);
                }
                else
                {
                    Min = min(Min,Back(1,new_state) - c[i].first + 4);
                }
            }
            if(c[i].second==true)
            {
                if(reached[1][new_state])
                {
                    Min = min(Min,rez[1][new_state] - c[i].first + 8);
                }
                else
                {
                    Min = min(Min,Back(1,new_state) - c[i].first + 8);
                }
            }
            Max = max(Max,Min);
            if(nrop>limit)
            {
                break;
            }
        }
        if(Max==-oo)
        {
            Max = 0;
        }
        rez[1][state] = Max;
        return Max;
    }
    else
    {
        int Min = oo;
        for(int i=0; i<c.size(); i++)
        {
            if(state[i]=='1')
            {
                continue;
            }
            int Max = -oo;
            string new_state = state;
            new_state[i] = '1';
            if(reached[1][new_state])
            {
                Max = max(Max,rez[1][new_state] + c[i].first);
            }
            else
            {
                Max = max(Max,Back(1,new_state) + c[i].first);
            }
            if(c[i].second==false && c[i].first>2)
            {
                if(reached[0][new_state])
                {
                    Max = max(Max,rez[0][new_state] + c[i].first - 4);
                }
                else
                {
                    Max = max(Max,Back(0,new_state) + c[i].first - 4);
                }
            }
            if(c[i].second==true)
            {
                if(reached[0][new_state])
                {
                    Max = max(Max,rez[0][new_state] + c[i].first - 8);
                }
                else
                {
                    Max = max(Max,Back(0,new_state) + c[i].first - 8);
                }
            }
            Min = min(Min,Max);
            if(nrop>limit)
            {
                break;
            }
        }
        if(Min==oo)
        {
            Min = 0;
        }
        rez[0][state] = Min;
        return Min;
    }
}
bool cmp(pair<int,int> a, pair<int,int> b)
{
    if(a.second==b.second)
    {
        return a.first<b.first;
    }
    bool ok1 = false, ok2 = false;
    if((a.second==false && a.first>3) || (a.second==true && a.second>=4))
    {
        ok1 = true;
    }
    if((b.second==false && b.first>3) || (b.second==true && b.second>=4))
    {
        ok2 = true;
    }
    if(ok1 && ok2)
    {
        return (a.first<b.first);
    }
    if(!ok1 && !ok2)
    {
        return a.first<b.first;
    }
    return (ok1<ok2);
}
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});
        }
    }
    int nr = 0;
    for(int i=0; i<c.size(); i++)
    {
        if((c[i].first<=6 && c[i].second==true) || (c[i].first<=3 && c[i].second==false))
        {
            ++nr;
        }
    }
    for(int i=0; i<c.size(); i++)
    {
        for(int j=i+1; j<c.size(); j++)
        {
            if(!cmp(c[i],c[j]))
            {
                swap(c[i],c[j]);
            }
        }
    }
    string init;
    for(int i=0; i<c.size(); i++)
    {
        init.push_back('0');
    }
    cout<<Back(1,init)<<'\n';
    return 0;
}

Compilation message

game.cpp: In function 'int Back(int, std::string)':
game.cpp:85:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |         for(int i=0; i<c.size(); i++)
      |                      ~^~~~~~~~~
game.cpp:140:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  140 |         for(int i=0; i<c.size(); i++)
      |                      ~^~~~~~~~~
game.cpp: In function 'int main()':
game.cpp:262:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  262 |     for(int i=0; i<c.size(); i++)
      |                  ~^~~~~~~~~
game.cpp:269:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  269 |     for(int i=0; i<c.size(); i++)
      |                  ~^~~~~~~~~
game.cpp:271:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  271 |         for(int j=i+1; j<c.size(); j++)
      |                        ~^~~~~~~~~
game.cpp:280:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  280 |     for(int i=0; i<c.size(); i++)
      |                  ~^~~~~~~~~

Subtask #1
20.0 / 20.0

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

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 3 ms 588 KB Output is correct
3 Correct 5 ms 844 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 6 ms 844 KB Output is correct
6 Correct 2 ms 460 KB Output is correct
7 Correct 13 ms 1484 KB Output is correct
8 Correct 2 ms 460 KB Output is correct
9 Correct 134 ms 9820 KB Output is correct
10 Correct 335 ms 21772 KB Output is correct
11 Correct 2 ms 588 KB Output is correct
12 Correct 2 ms 416 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 5 ms 844 KB Output is correct
15 Correct 12 ms 1484 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 204 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 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 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 0 ms 204 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 0 ms 332 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 0 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 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 0 ms 332 KB Output is correct
31 Correct 0 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 0 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 0 ms 332 KB Output is correct
40 Correct 0 ms 332 KB Output is correct
41 Correct 0 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 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 0 ms 332 KB Output is correct
49 Correct 0 ms 204 KB Output is correct
50 Correct 0 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 3 ms 588 KB Output is correct
53 Correct 5 ms 844 KB Output is correct
54 Correct 1 ms 332 KB Output is correct
55 Correct 6 ms 844 KB Output is correct
56 Correct 2 ms 460 KB Output is correct
57 Correct 13 ms 1484 KB Output is correct
58 Correct 2 ms 460 KB Output is correct
59 Correct 134 ms 9820 KB Output is correct
60 Correct 335 ms 21772 KB Output is correct
61 Correct 2 ms 588 KB Output is correct
62 Correct 2 ms 416 KB Output is correct
63 Correct 1 ms 460 KB Output is correct
64 Correct 5 ms 844 KB Output is correct
65 Correct 12 ms 1484 KB Output is correct
66 Correct 419 ms 28040 KB Output is correct
67 Correct 468 ms 31180 KB Output is correct
68 Correct 463 ms 31140 KB Output is correct
69 Correct 411 ms 27964 KB Output is correct
70 Correct 426 ms 28028 KB Output is correct
71 Correct 413 ms 31196 KB Output is correct
72 Correct 446 ms 31128 KB Output is correct
73 Execution timed out 534 ms 43756 KB Time limit exceeded
74 Halted 0 ms 0 KB -