oj.uz

Submission #1103802

# Submission time Handle Problem Language Result Execution time Memory
1103802 2024-10-21T18:37:33 Z arvindr9 Dango Maker (JOI18_dango_maker) C++14
100 / 100
 227 ms 162620 KB 
#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#define DEBUG(...) debug(#__VA_ARGS__, __VA_ARGS__)
#else
#define DEBUG(...) 6
#endif
 
template<typename T, typename S> ostream& operator << (ostream &os, const pair<T, S> &p) {return os << "(" << p.first << ", " << p.second << ")";}
template<typename C, typename T = decay<decltype(*begin(declval<C>()))>, typename enable_if<!is_same<C, string>::value>::type* = nullptr>
ostream& operator << (ostream &os, const C &c) {bool f = true; os << "["; for (const auto &x : c) {if (!f) os << ", "; f = false; os << x;} return os << "]";}
template<typename T> void debug(string s, T x) {cerr << "\033[1;35m" << s << "\033[0;32m = \033[33m" << x << "\033[0m\n";}
template<typename T, typename... Args> void debug(string s, T x, Args... args) {for (int i=0, b=0; i<(int)s.size(); i++) if (s[i] == '(' || s[i] == '{') b++; else
if (s[i] == ')' || s[i] == '}') b--; else if (s[i] == ',' && b == 0) {cerr << "\033[1;35m" << s.substr(0, i) << "\033[0;32m = \033[33m" << x << "\033[31m | "; debug(s.substr(s.find_first_not_of(' ', i + 1)), args...); break;}}

typedef int int2;
#define int long long
#define pi pair<int, int>
#define vi vector<int>
#define vii vector<vector<int>>
#define vpi vector<pi>
#define lep(i,l,r) for(int i=l;i<=r;++i)
#define rep(i,r,l) for(int i=r;i>=l;--i)
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define f first
#define s second
const int inf = 1e18;

int t;

typedef array<int,2> a2;

int2 main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    vector<string> a(n);
    lep(i,0,n-1) {
        cin >> a[i];
    }
    vector<vector<a2>> dp(n, vector<a2>(m));
    vector<vector<bool>> can0(n, vector<bool>(m)); // horiz
    vector<vector<bool>> can1 = can0; // vertical
    lep(i,0,n-1) {
        rep(j,m-1,0) {
            if (j + 2 < m and a[i][j] == 'R' and a[i][j+1] == 'G' and a[i][j+2] == 'W') can0[i][j] = true;
            if (i + 2 < n and a[i][j] == 'R' and a[i+1][j] == 'G' and a[i+2][j] == 'W') can1[i][j] = true;

            if (i == 0 or j == m - 1) {
                // base case
                if (can0[i][j]) dp[i][j][0] = 1;
                if (can1[i][j]) dp[i][j][1] = 1;
            } else {
                int dp0 = dp[i-1][j+1][0]; // horizontal
                if (can0[i][j]) {
                    dp0 = max(dp0, 1LL);
                    // place a horizontal thing here
                    dp0 = max(dp0, 1 + dp[i-1][j+1][0]); // place horizontal thing earlier
                    // place vertical thing 3 earlier
                    if (i-3 >= 0 and j+3 < m) {
                        dp0 = max(dp0, 1 + dp[i-3][j+3][1]);
                    }
                }
                int dp1 = dp[i-1][j+1][1];
                if (can1[i][j]) {
                    dp1 = max(dp1, 1LL);
                    // place a vertical thing here. no restrictions on others
                    dp1 = max(dp1, 1 + max(dp[i-1][j+1][0], dp[i-1][j+1][1]));
                }
                dp[i][j][0] = dp0;
                dp[i][j][1] = dp1;
            }
        }
    }
    DEBUG(can1[0][3], can1[1][2]);
    DEBUG(dp[0][3]);
    DEBUG(dp[1][2]);
    DEBUG(dp[1][2][1]);
    int ans = 0;
    lep(i,0,n-1) {
        lep(j,0,m-1) {
            if (j == 0 or i == n-1) {
                int to_add = max(dp[i][j][0], dp[i][j][1]);
                DEBUG(i,j,to_add);
                ans += max(dp[i][j][0], dp[i][j][1]);
            }
        }
    }
    cout << ans << "\n";
    


    
} 

/* stuff you should look for
	* int overflow, array bounds
	* special cases (n=1?)
	* do smth instead of nothing and stay organized
	* WRITE STUFF DOWN
	* DON'T GET STUCK ON ONE APPROACH
*/

Compilation message

dango_maker.cpp: In function 'int2 main()':
dango_maker.cpp:8:20: warning: statement has no effect [-Wunused-value]
    8 | #define DEBUG(...) 6
      |                    ^
dango_maker.cpp:80:5: note: in expansion of macro 'DEBUG'
   80 |     DEBUG(can1[0][3], can1[1][2]);
      |     ^~~~~
dango_maker.cpp:8:20: warning: statement has no effect [-Wunused-value]
    8 | #define DEBUG(...) 6
      |                    ^
dango_maker.cpp:81:5: note: in expansion of macro 'DEBUG'
   81 |     DEBUG(dp[0][3]);
      |     ^~~~~
dango_maker.cpp:8:20: warning: statement has no effect [-Wunused-value]
    8 | #define DEBUG(...) 6
      |                    ^
dango_maker.cpp:82:5: note: in expansion of macro 'DEBUG'
   82 |     DEBUG(dp[1][2]);
      |     ^~~~~
dango_maker.cpp:8:20: warning: statement has no effect [-Wunused-value]
    8 | #define DEBUG(...) 6
      |                    ^
dango_maker.cpp:83:5: note: in expansion of macro 'DEBUG'
   83 |     DEBUG(dp[1][2][1]);
      |     ^~~~~
dango_maker.cpp:8:20: warning: statement has no effect [-Wunused-value]
    8 | #define DEBUG(...) 6
      |                    ^
dango_maker.cpp:89:17: note: in expansion of macro 'DEBUG'
   89 |                 DEBUG(i,j,to_add);
      |                 ^~~~~
dango_maker.cpp:88:21: warning: unused variable 'to_add' [-Wunused-variable]
   88 |                 int to_add = max(dp[i][j][0], dp[i][j][1]);
      |                     ^~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 508 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 508 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 476 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 508 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 352 KB Output is correct
34 Correct 1 ms 352 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 344 KB Output is correct
40 Correct 1 ms 504 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 504 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 460 KB Output is correct
53 Correct 1 ms 532 KB Output is correct

Subtask #3
67.0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 508 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 476 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 508 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 352 KB Output is correct
34 Correct 1 ms 352 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 344 KB Output is correct
40 Correct 1 ms 504 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 504 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 460 KB Output is correct
53 Correct 1 ms 532 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 2 ms 1108 KB Output is correct
56 Correct 2 ms 596 KB Output is correct
57 Correct 2 ms 1108 KB Output is correct
58 Correct 23 ms 18360 KB Output is correct
59 Correct 219 ms 162620 KB Output is correct
60 Correct 227 ms 162528 KB Output is correct
61 Correct 202 ms 162448 KB Output is correct
62 Correct 1 ms 596 KB Output is correct
63 Correct 218 ms 157120 KB Output is correct
64 Correct 164 ms 162380 KB Output is correct
65 Correct 177 ms 162380 KB Output is correct
66 Correct 169 ms 162444 KB Output is correct
67 Correct 161 ms 162376 KB Output is correct
68 Correct 166 ms 162360 KB Output is correct
69 Correct 174 ms 162380 KB Output is correct
70 Correct 19 ms 18516 KB Output is correct
71 Correct 20 ms 18516 KB Output is correct
72 Correct 19 ms 18516 KB Output is correct
73 Correct 25 ms 18516 KB Output is correct
74 Correct 20 ms 18516 KB Output is correct
75 Correct 19 ms 18516 KB Output is correct
76 Correct 19 ms 18516 KB Output is correct
77 Correct 20 ms 18516 KB Output is correct
78 Correct 19 ms 18516 KB Output is correct
79 Correct 20 ms 18516 KB Output is correct
80 Correct 19 ms 18516 KB Output is correct
81 Correct 19 ms 18516 KB Output is correct
82 Correct 19 ms 18516 KB Output is correct
83 Correct 25 ms 18516 KB Output is correct
84 Correct 19 ms 18516 KB Output is correct
85 Correct 23 ms 18508 KB Output is correct
86 Correct 19 ms 18680 KB Output is correct
87 Correct 17 ms 18452 KB Output is correct
88 Correct 17 ms 18516 KB Output is correct
89 Correct 17 ms 18456 KB Output is correct
90 Correct 17 ms 18516 KB Output is correct