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답안 #508752

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
508752 2022-01-13T17:11:05 Z cig32 Dango Maker (JOI18_dango_maker) C++17
33 / 100
 527 ms 179196 KB 
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
mt19937_64 rng((int)std::chrono::steady_clock::now().time_since_epoch().count());
const int MAXN = 1.8e7 + 10;
const int MOD = 1e9 + 7;
//#define int long long    

int rnd(int x, int y) { // random number generator
  int u= uniform_int_distribution<int>(x, y)(rng); return u;
}                     

map<int, vector<int> > adj;
vector<int> active;

vector<int> v;
bool vis[MAXN];

void dfs(int node) {
    v.push_back(node);
    vis[node] = 1;
    for(int x: adj[node]) {
        if(!vis[x]) dfs(x);
    }
}
void solve(int tc) {
  int n, m;
  cin >> n >> m;
  char a[n+1][m+1];
  for(int i=1; i<=n; i++) {
      for(int j=1; j<=m; j++) {
          cin >> a[i][j];
      }
  }
  for(int i=1; i<=n; i++) {
      for(int j=1; j<=m; j++) {
          if(j+2 <= m && a[i][j] == 'R' && a[i][j+1] == 'G' && a[i][j+2] == 'W') {
              int id = (i-1) * m + j;
              active.push_back(id);
              if(i+2 <= n && a[i+1][j] == 'G' && a[i+2][j] == 'W') {
                  int id2 = n*m + (i-1) * m + j;
                  adj[id].push_back(id2);
                  adj[id2].push_back(id);
              }
              if(i >= 2 && i+1 <= n && a[i-1][j+1] == 'R' && a[i+1][j+1] == 'W') {
                  int id2 = n*m + (i-2) * m + j+1;
                  adj[id].push_back(id2);
                  adj[id2].push_back(id);
              }
              if(i >= 3 && a[i-2][j+2] == 'R' && a[i-1][j+2] == 'G') {
                  int id2 = n*m + (i-3) * m + j+2;
                  adj[id].push_back(id2);
                  adj[id2].push_back(id);
              }
          }
          if(i+2 <= n && a[i][j] == 'R' && a[i+1][j] == 'G' && a[i+2][j] == 'W') {
              int id = n*m + (i-1) * m + j;
              active.push_back(id);
              if(j+2 <= m && a[i][j+1] == 'G' && a[i][j+2] == 'W') {
                  int id2 = (i-1) * m + j;
                  adj[id].push_back(id2);
                  adj[id2].push_back(id);
              }
              if(j >= 2 && j+1 <= m && a[i+1][j-1] == 'R' && a[i+1][j+1] == 'W') {
                  int id2 = i * m + j-1;
                  adj[id].push_back(id2);
                  adj[id2].push_back(id);
              }
              if(j >= 3 && a[i+2][j-2] == 'R' && a[i+2][j-1] == 'G') {
                  int id2 = (i+1) * m + j-2;
                  adj[id].push_back(id2);
                  adj[id2].push_back(id);
              }
          }
      }
  }
  int ans = 0;
  for(int x: active) {
      if(!vis[x]) {
          v.clear();
          dfs(x);
          int mi = 1e9, ma = -1e9;
          int cm;
          for(int y: v) {
              int z = (y > n*m ? y - n*m : y);
              if(y > n*m) z = z + m;
              else z++;
              //z:=index
              int r = (z-1) / m + 1;
              int c = (z-1) % m + 1;
              mi = min(mi, r - c);
              ma = max(ma, r - c);
              cm = r + c;
          }
          //cout << mi << " " << ma << " " << cm << "\n";
          map<int, int> dp[2];
          int r = (cm + mi) / 2;
          int c = (cm - mi) / 2;
          dp[0][mi] = (a[r][c-1] == 'R' && a[r][c+1] == 'W');
          dp[1][mi] = (a[r-1][c] == 'R' && a[r+1][c] == 'W');
          //cout << "(" << r << ", " << c << ") ";
          for(int i=mi + 2; i<=ma; i+=2) {
              r = (cm + i) / 2;
              c = (cm - i) / 2;
              //cout << "(" << r << ", " << c << ") ";
              dp[0][i] = max(
                dp[0][i-2] + (c >= 2 && c <= m && a[r][c-1] == 'R' && a[r][c+1] == 'W'),
                dp[1][i-2]
                );
              dp[1][i] = max(
                dp[0][i-2],
                dp[1][i-2] + (r >= 2 && r <= n && a[r-1][c] == 'R' && a[r+1][c] == 'W')
                );
          }
          //cout << "\n";
          ans += max(dp[0][ma], dp[1][ma]);
          /*for(int i=mi; i<=ma; i++) cout << dp[0][i] << " ";
          cout << "\n";
          for(int i=mi; i<=ma; i++) cout << dp[1][i] << " ";
          cout << "\n";*/
      }
  }
  cout << ans << "\n";
  
}

int32_t main(){
  ios::sync_with_stdio(0); cin.tie(0);
  int t = 1; //cin >> t;
  for(int i=1; i<=t; i++) solve(i);
} 
/*
10 10
RGWRGWRGWR
WWRGWRGWRG
WRGWRGWRGW
RGWRGWRGWR
GWRGWWGWRG
WRGWRGWRGW
RGWRGWRGWR
GWRGWRGWRG
WRGWRGWRGW
RGWRGWRGWR

*/

Compilation message

dango_maker.cpp: In function 'void solve(int)':
dango_maker.cpp:97:23: warning: 'cm' may be used uninitialized in this function [-Wmaybe-uninitialized]
   97 |           int r = (cm + mi) / 2;
      |                   ~~~~^~~~~

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 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 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 204 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

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 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 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 204 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 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 0 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 0 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 0 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 0 ms 204 KB Output is correct
37 Correct 0 ms 204 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 0 ms 204 KB Output is correct
41 Correct 0 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 0 ms 204 KB Output is correct
45 Correct 1 ms 204 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 0 ms 204 KB Output is correct
50 Correct 0 ms 204 KB Output is correct
51 Correct 0 ms 204 KB Output is correct
52 Correct 0 ms 204 KB Output is correct
53 Correct 0 ms 204 KB Output is correct

Subtask #3
0 / 67.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 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 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 204 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 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 0 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 0 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 0 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 0 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 0 ms 204 KB Output is correct
37 Correct 0 ms 204 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 0 ms 204 KB Output is correct
41 Correct 0 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 0 ms 204 KB Output is correct
45 Correct 1 ms 204 KB Output is correct
46 Correct 0 ms 204 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 0 ms 204 KB Output is correct
50 Correct 0 ms 204 KB Output is correct
51 Correct 0 ms 204 KB Output is correct
52 Correct 0 ms 204 KB Output is correct
53 Correct 0 ms 204 KB Output is correct
54 Correct 0 ms 332 KB Output is correct
55 Correct 0 ms 332 KB Output is correct
56 Correct 2 ms 588 KB Output is correct
57 Correct 2 ms 588 KB Output is correct
58 Correct 53 ms 10652 KB Output is correct
59 Runtime error 527 ms 179196 KB Execution killed with signal 11
60 Halted 0 ms 0 KB -