oj.uz

Submission #457848

# Submission time Handle Problem Language Result Execution time Memory
457848 2021-08-07T12:37:56 Z Tenis0206 Game (eJOI20_game) C++11
100 / 100
 403 ms 32192 KB 
#include <bits/stdc++.h>

using namespace std;
const int limit = 75000;
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 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct

Subtask #2
20.0 / 20.0

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

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 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 1 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 7 ms 844 KB Output is correct
6 Correct 2 ms 460 KB Output is correct
7 Correct 11 ms 1484 KB Output is correct
8 Correct 2 ms 460 KB Output is correct
9 Correct 131 ms 9732 KB Output is correct
10 Correct 205 ms 15736 KB Output is correct
11 Correct 2 ms 588 KB Output is correct
12 Correct 2 ms 460 KB Output is correct
13 Correct 2 ms 460 KB Output is correct
14 Correct 5 ms 844 KB Output is correct
15 Correct 13 ms 1484 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 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 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 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 0 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 0 ms 332 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 0 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 0 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 204 KB Output is correct
45 Correct 1 ms 204 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 1 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 7 ms 844 KB Output is correct
56 Correct 2 ms 460 KB Output is correct
57 Correct 11 ms 1484 KB Output is correct
58 Correct 2 ms 460 KB Output is correct
59 Correct 131 ms 9732 KB Output is correct
60 Correct 205 ms 15736 KB Output is correct
61 Correct 2 ms 588 KB Output is correct
62 Correct 2 ms 460 KB Output is correct
63 Correct 2 ms 460 KB Output is correct
64 Correct 5 ms 844 KB Output is correct
65 Correct 13 ms 1484 KB Output is correct
66 Correct 303 ms 20404 KB Output is correct
67 Correct 315 ms 22720 KB Output is correct
68 Correct 285 ms 22772 KB Output is correct
69 Correct 279 ms 20484 KB Output is correct
70 Correct 296 ms 20460 KB Output is correct
71 Correct 302 ms 22972 KB Output is correct
72 Correct 368 ms 22756 KB Output is correct
73 Correct 403 ms 32192 KB Output is correct
74 Correct 306 ms 22708 KB Output is correct
75 Correct 316 ms 22756 KB Output is correct
76 Correct 328 ms 22876 KB Output is correct
77 Correct 320 ms 22784 KB Output is correct
78 Correct 286 ms 22804 KB Output is correct
79 Correct 283 ms 22804 KB Output is correct
80 Correct 308 ms 22804 KB Output is correct
81 Correct 331 ms 20432 KB Output is correct
82 Correct 302 ms 22804 KB Output is correct
83 Correct 321 ms 22736 KB Output is correct