oj.uz

Submission #255230

# Submission time Handle Problem Language Result Execution time Memory
255230 2020-07-31T15:28:36 Z uacoder123 Dango Maker (JOI18_dango_maker) C++14
13 / 100
 1 ms 384 KB 
#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
 
typedef int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;
int n,m;
ii arr[3000][3000];
char arr1[3000][3000];
int dp[3001][2][2];
int cal(int i,int j,int k,int l,int c)
{
  if(dp[i][k][l]!=-1)
    return(dp[i][k][l]);
  dp[i][k][l]=0;
  if(i==n||j==m)
    return(0);
  int ans=0;
  ans=cal(i+1,j+1,0,k,c+1);
  if(arr[i][j].F==1)
    ans=max(ans,1+cal(i+1,j+1,1,k,c+1));
  if(arr[i][j].S==1&&k!=1&&l!=1)
    ans=max(ans,1+cal(i+1,j+1,2,k,c+1));
  dp[i][k][l]=ans;
  return(dp[i][k][l]);
}
int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cin>>n>>m;
  for(int i=n-1;i>=0;--i)
    for(int j=0;j<m;++j)
      cin>>arr1[i][j];
  for(int i=0;i<n;++i)
  {
    for(int j=0;j<m;++j)
    {
      arr[i][j]=mp(0,0);
      if(i>1&&arr1[i][j]=='R'&&arr1[i-1][j]=='G'&&arr1[i-2][j]=='W')
        arr[i][j].S=1;
      if(j+2<m&&arr1[i][j]=='R'&&arr1[i][j+1]=='G'&&arr1[i][j+2]=='W')
        arr[i][j].F=1;
    }
  }
  int ans=0;
  for(int i=0;i<n;++i)
  {
    for(int j=0;j<n;++j)
      for(int k=0;k<3;++k)
        for(int l=0;l<3;++l)
          dp[j][k][l]=-1;
    ans+=cal(i,0,0,0,0);
  }
  for(int j=1;j<m;++j)
  {
    for(int j=0;j<n;++j)
      for(int k=0;k<3;++k)
        for(int l=0;l<3;++l)
          dp[j][k][l]=-1;
    ans+=cal(0,j,0,0,0);
  }
  cout<<ans<<endl;
  return 0;
}

Compilation message

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:62:22: warning: iteration 2 invokes undefined behavior [-Waggressive-loop-optimizations]
           dp[j][k][l]=-1;
           ~~~~~~~~~~~^~~
dango_maker.cpp:61:22: note: within this loop
         for(int l=0;l<3;++l)
                     ~^~
dango_maker.cpp:70:22: warning: iteration 2 invokes undefined behavior [-Waggressive-loop-optimizations]
           dp[j][k][l]=-1;
           ~~~~~~~~~~~^~~
dango_maker.cpp:69:22: note: within this loop
         for(int l=0;l<3;++l)
                     ~^~
dango_maker.cpp:70:22: warning: iteration 2 invokes undefined behavior [-Waggressive-loop-optimizations]
           dp[j][k][l]=-1;
           ~~~~~~~~~~~^~~
dango_maker.cpp:68:20: note: within this loop
       for(int k=0;k<3;++k)
                   ~^~
dango_maker.cpp:62:22: warning: iteration 2 invokes undefined behavior [-Waggressive-loop-optimizations]
           dp[j][k][l]=-1;
           ~~~~~~~~~~~^~~
dango_maker.cpp:60:20: note: within this loop
       for(int k=0;k<3;++k)
                   ~^~
dango_maker.cpp:62:21: warning: array subscript is above array bounds [-Warray-bounds]
           dp[j][k][l]=-1;
           ~~~~~~~~~~^
dango_maker.cpp:62:21: warning: array subscript is above array bounds [-Warray-bounds]
dango_maker.cpp:62:18: warning: array subscript is above array bounds [-Warray-bounds]
           dp[j][k][l]=-1;
           ~~~~~~~^
dango_maker.cpp:62:21: warning: array subscript is above array bounds [-Warray-bounds]
           dp[j][k][l]=-1;
           ~~~~~~~~~~^
dango_maker.cpp:62:18: warning: array subscript is above array bounds [-Warray-bounds]
           dp[j][k][l]=-1;
           ~~~~~~~^
dango_maker.cpp:70:21: warning: array subscript is above array bounds [-Warray-bounds]
           dp[j][k][l]=-1;
           ~~~~~~~~~~^
dango_maker.cpp:70:21: warning: array subscript is above array bounds [-Warray-bounds]
dango_maker.cpp:70:18: warning: array subscript is above array bounds [-Warray-bounds]
           dp[j][k][l]=-1;
           ~~~~~~~^
dango_maker.cpp:70:21: warning: array subscript is above array bounds [-Warray-bounds]
           dp[j][k][l]=-1;
           ~~~~~~~~~~^
dango_maker.cpp:70:18: warning: array subscript is above array bounds [-Warray-bounds]
           dp[j][k][l]=-1;
           ~~~~~~~^

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Incorrect 1 ms 384 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #3
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Incorrect 1 ms 384 KB Output isn't correct
21 Halted 0 ms 0 KB -