#include <bits/stdc++.h>
#pragma GCC optimize("O3", "unroll-loops")
#define ll long long
// #define int long long
#define pb push_back
#define fi first
#define se second
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
#define ld long double
using namespace std;
typedef pair<int,int> pii;
typedef pair<int, pii> ipii;
const int MAXN = 3002;
int n, m;
char a[MAXN][MAXN];
int b[MAXN][MAXN], cnt;
vector <vector<int>> adj;
void add(int x, int y){ adj[y].pb(x); }
int day;
vector <int> mat, vis;
vector<bool> done;
bool dfs(int nw){
if(vis[nw] == day) return 0;
vis[nw] = day;
for(auto nx : adj[nw]){
if(mat[nx]==0 || dfs(mat[nx])){
mat[nx] = nw; return 1;
}
}
return 0;
}
signed main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin >> n >> m;
for(int i=1; i<=n; i++)
for(int j=1; j<=m; j++) cin >> a[i][j];
vector<int>te; adj.pb(te);
int c1 = 0, c2 = 0;
for(int i=1; i<=n; i++){
for(int j=1; j<=m-2; j++){
if(a[i][j]=='R' && a[i][j+1]=='G' && a[i][j+2]=='W'){
c1++;
}
}
}
for(int i=1; i<=n-2; i++){
for(int j=1; j<=m; j++){
if(a[i][j]=='R' && a[i+1][j]=='G' && a[i+2][j]=='W'){
c2++;
}
}
}
int num = 0;
if(c1 < c2){
for(int i=1; i<=n; i++){
for(int j=1; j<=m-2; j++){
if(a[i][j]=='R' && a[i][j+1]=='G' && a[i][j+2]=='W'){
adj.pb(te);
b[i][j] = ++cnt;
b[i][j+1] = cnt;
b[i][j+2] = cnt;
}
}
}
num = cnt;
for(int i=1; i<=n-2; i++){
for(int j=1; j<=m; j++){
if(a[i][j]=='R' && a[i+1][j]=='G' && a[i+2][j]=='W'){
++cnt;
add(cnt, b[i][j]);
add(cnt, b[i+1][j]);
add(cnt, b[i+2][j]);
}
}
}
} else {
for(int i=1; i<=n-2; i++){
for(int j=1; j<=m; j++){
if(a[i][j]=='R' && a[i+1][j]=='G' && a[i+2][j]=='W'){
adj.pb(te);
++cnt;
b[i][j] = cnt;
b[i+1][j] = cnt;
b[i+2][j] = cnt;
}
}
}
num = cnt;
for(int i=1; i<=n; i++){
for(int j=1; j<=m-2; j++){
if(a[i][j]=='R' && a[i][j+1]=='G' && a[i][j+2]=='W'){
++cnt;
add(cnt, b[i][j]);
add(cnt, b[i][j+1]);
add(cnt, b[i][j+2]);
}
}
}
}
mat.resize(cnt+2); vis.resize(cnt+2); done.resize(cnt+2);
int ANS = 0;
for(int i=1; i<=num; i++){
for(auto nx : adj[i]){
if(mat[nx] == 0){
mat[nx] = i;
done[i] = 1;
ANS++;
break;
}
}
}
for(int i=1; i<=num; i++){
if(done[i]) continue;
day++;
ANS += dfs(i);
}
cout << cnt-ANS << '\n';
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
432 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
432 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
460 KB |
Output is correct |
22 |
Correct |
0 ms |
344 KB |
Output is correct |
23 |
Correct |
1 ms |
344 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
364 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
460 KB |
Output is correct |
33 |
Correct |
0 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
0 ms |
348 KB |
Output is correct |
36 |
Correct |
0 ms |
348 KB |
Output is correct |
37 |
Correct |
0 ms |
344 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
0 ms |
604 KB |
Output is correct |
40 |
Correct |
0 ms |
460 KB |
Output is correct |
41 |
Correct |
0 ms |
348 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
0 ms |
348 KB |
Output is correct |
44 |
Correct |
0 ms |
348 KB |
Output is correct |
45 |
Correct |
0 ms |
348 KB |
Output is correct |
46 |
Correct |
0 ms |
348 KB |
Output is correct |
47 |
Correct |
1 ms |
344 KB |
Output is correct |
48 |
Correct |
0 ms |
348 KB |
Output is correct |
49 |
Correct |
0 ms |
348 KB |
Output is correct |
50 |
Correct |
0 ms |
348 KB |
Output is correct |
51 |
Correct |
0 ms |
348 KB |
Output is correct |
52 |
Correct |
0 ms |
348 KB |
Output is correct |
53 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
432 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
1 ms |
460 KB |
Output is correct |
22 |
Correct |
0 ms |
344 KB |
Output is correct |
23 |
Correct |
1 ms |
344 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
364 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
460 KB |
Output is correct |
33 |
Correct |
0 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
0 ms |
348 KB |
Output is correct |
36 |
Correct |
0 ms |
348 KB |
Output is correct |
37 |
Correct |
0 ms |
344 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
0 ms |
604 KB |
Output is correct |
40 |
Correct |
0 ms |
460 KB |
Output is correct |
41 |
Correct |
0 ms |
348 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
0 ms |
348 KB |
Output is correct |
44 |
Correct |
0 ms |
348 KB |
Output is correct |
45 |
Correct |
0 ms |
348 KB |
Output is correct |
46 |
Correct |
0 ms |
348 KB |
Output is correct |
47 |
Correct |
1 ms |
344 KB |
Output is correct |
48 |
Correct |
0 ms |
348 KB |
Output is correct |
49 |
Correct |
0 ms |
348 KB |
Output is correct |
50 |
Correct |
0 ms |
348 KB |
Output is correct |
51 |
Correct |
0 ms |
348 KB |
Output is correct |
52 |
Correct |
0 ms |
348 KB |
Output is correct |
53 |
Correct |
0 ms |
348 KB |
Output is correct |
54 |
Correct |
0 ms |
348 KB |
Output is correct |
55 |
Correct |
3 ms |
9176 KB |
Output is correct |
56 |
Correct |
1 ms |
604 KB |
Output is correct |
57 |
Correct |
5 ms |
11356 KB |
Output is correct |
58 |
Correct |
32 ms |
14640 KB |
Output is correct |
59 |
Correct |
259 ms |
73888 KB |
Output is correct |
60 |
Correct |
254 ms |
73920 KB |
Output is correct |
61 |
Correct |
279 ms |
73976 KB |
Output is correct |
62 |
Correct |
0 ms |
344 KB |
Output is correct |
63 |
Correct |
244 ms |
73124 KB |
Output is correct |
64 |
Correct |
395 ms |
262144 KB |
Output is correct |
65 |
Correct |
447 ms |
262144 KB |
Output is correct |
66 |
Correct |
515 ms |
262144 KB |
Output is correct |
67 |
Correct |
141 ms |
83864 KB |
Output is correct |
68 |
Correct |
149 ms |
83836 KB |
Output is correct |
69 |
Correct |
153 ms |
80956 KB |
Output is correct |
70 |
Correct |
45 ms |
35804 KB |
Output is correct |
71 |
Correct |
42 ms |
35772 KB |
Output is correct |
72 |
Correct |
48 ms |
35768 KB |
Output is correct |
73 |
Correct |
45 ms |
35764 KB |
Output is correct |
74 |
Correct |
46 ms |
35840 KB |
Output is correct |
75 |
Correct |
48 ms |
35744 KB |
Output is correct |
76 |
Correct |
49 ms |
35752 KB |
Output is correct |
77 |
Correct |
47 ms |
35836 KB |
Output is correct |
78 |
Correct |
52 ms |
35744 KB |
Output is correct |
79 |
Correct |
54 ms |
35772 KB |
Output is correct |
80 |
Correct |
50 ms |
35756 KB |
Output is correct |
81 |
Correct |
61 ms |
35748 KB |
Output is correct |
82 |
Correct |
56 ms |
35772 KB |
Output is correct |
83 |
Correct |
45 ms |
35768 KB |
Output is correct |
84 |
Correct |
52 ms |
35748 KB |
Output is correct |
85 |
Correct |
46 ms |
35780 KB |
Output is correct |
86 |
Correct |
50 ms |
35752 KB |
Output is correct |
87 |
Correct |
48 ms |
35768 KB |
Output is correct |
88 |
Correct |
52 ms |
35768 KB |
Output is correct |
89 |
Correct |
50 ms |
35772 KB |
Output is correct |
90 |
Correct |
50 ms |
35748 KB |
Output is correct |