#include <bits/stdc++.h>
using namespace std;
template<typename T>
bool maximize(T& a, const T& b){
if(a < b) return a = b, true;
return false;
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
int N, M;
cin >> N >> M;
vector<vector<char>> a(N, vector<char>(M));
for(int i = 0; i < N; ++i){
for(int j = 0; j < M; ++j){
cin >> a[i][j];
}
}
auto check_vertical = [&](int i, int j){
return i - 1 >= 0 && i + 1 < N && a[i - 1][j] == 'R' && a[i][j] == 'G' && a[i + 1][j] == 'W';
};
auto check_horizontal = [&](int i, int j){
return j - 1 >= 0 && j + 1 < M && a[i][j - 1] == 'R' && a[i][j] == 'G' && a[i][j + 1] == 'W';
};
int ans = 0;
for(int s = 0; s <= N + M - 1; ++s){
vector<tuple<int, int, int, int>> cells; //[x, y, v, h]
for(int i = max(0, s - M + 1), j = s - i; 0 <= i && i < N && 0 <= j && j < M; ++i, --j){
cells.emplace_back(i, j, check_vertical(i, j), check_horizontal(i, j));
}
int k = (int)cells.size();
vector<array<int, 3>> dp(k + 1, {0, 0, 0});
for(int j = 0; j < k; ++j){
int x, y, v, h; tie(x, y, v, h) = cells[j];
maximize(dp[j + 1][0], dp[j][0]);
maximize(dp[j + 1][0], dp[j][1]);
maximize(dp[j + 1][0], dp[j][2]);
maximize(dp[j + 1][1], dp[j][0]);
maximize(dp[j + 1][1], dp[j][1]);
maximize(dp[j + 1][2], dp[j][0]);
maximize(dp[j + 1][2], dp[j][2]);
if(v) maximize(dp[j + 1][1], max(dp[j][0], dp[j][1]) + 1);
if(h) maximize(dp[j + 1][2], max(dp[j][0], dp[j][2]) + 1);
}
ans += max({dp[k][0], dp[k][1], dp[k][2]});
}
cout << ans << '\n';
return 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 |
336 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 |
460 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 |
| # |
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 |
336 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 |
460 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 |
336 KB |
Output is correct |
| 21 |
Correct |
1 ms |
336 KB |
Output is correct |
| 22 |
Correct |
1 ms |
336 KB |
Output is correct |
| 23 |
Correct |
1 ms |
336 KB |
Output is correct |
| 24 |
Correct |
1 ms |
336 KB |
Output is correct |
| 25 |
Correct |
1 ms |
336 KB |
Output is correct |
| 26 |
Correct |
1 ms |
336 KB |
Output is correct |
| 27 |
Correct |
1 ms |
336 KB |
Output is correct |
| 28 |
Correct |
1 ms |
336 KB |
Output is correct |
| 29 |
Correct |
1 ms |
336 KB |
Output is correct |
| 30 |
Correct |
1 ms |
336 KB |
Output is correct |
| 31 |
Correct |
1 ms |
336 KB |
Output is correct |
| 32 |
Correct |
1 ms |
336 KB |
Output is correct |
| 33 |
Correct |
1 ms |
336 KB |
Output is correct |
| 34 |
Correct |
1 ms |
336 KB |
Output is correct |
| 35 |
Correct |
1 ms |
336 KB |
Output is correct |
| 36 |
Correct |
1 ms |
336 KB |
Output is correct |
| 37 |
Correct |
1 ms |
336 KB |
Output is correct |
| 38 |
Correct |
1 ms |
336 KB |
Output is correct |
| 39 |
Correct |
1 ms |
336 KB |
Output is correct |
| 40 |
Correct |
1 ms |
336 KB |
Output is correct |
| 41 |
Correct |
1 ms |
336 KB |
Output is correct |
| 42 |
Correct |
1 ms |
336 KB |
Output is correct |
| 43 |
Correct |
1 ms |
336 KB |
Output is correct |
| 44 |
Correct |
1 ms |
508 KB |
Output is correct |
| 45 |
Correct |
1 ms |
336 KB |
Output is correct |
| 46 |
Correct |
1 ms |
336 KB |
Output is correct |
| 47 |
Correct |
1 ms |
336 KB |
Output is correct |
| 48 |
Correct |
1 ms |
336 KB |
Output is correct |
| 49 |
Correct |
1 ms |
336 KB |
Output is correct |
| 50 |
Correct |
1 ms |
336 KB |
Output is correct |
| 51 |
Correct |
1 ms |
336 KB |
Output is correct |
| 52 |
Correct |
1 ms |
336 KB |
Output is correct |
| 53 |
Correct |
1 ms |
336 KB |
Output is correct |
| # |
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 |
336 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 |
460 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 |
336 KB |
Output is correct |
| 21 |
Correct |
1 ms |
336 KB |
Output is correct |
| 22 |
Correct |
1 ms |
336 KB |
Output is correct |
| 23 |
Correct |
1 ms |
336 KB |
Output is correct |
| 24 |
Correct |
1 ms |
336 KB |
Output is correct |
| 25 |
Correct |
1 ms |
336 KB |
Output is correct |
| 26 |
Correct |
1 ms |
336 KB |
Output is correct |
| 27 |
Correct |
1 ms |
336 KB |
Output is correct |
| 28 |
Correct |
1 ms |
336 KB |
Output is correct |
| 29 |
Correct |
1 ms |
336 KB |
Output is correct |
| 30 |
Correct |
1 ms |
336 KB |
Output is correct |
| 31 |
Correct |
1 ms |
336 KB |
Output is correct |
| 32 |
Correct |
1 ms |
336 KB |
Output is correct |
| 33 |
Correct |
1 ms |
336 KB |
Output is correct |
| 34 |
Correct |
1 ms |
336 KB |
Output is correct |
| 35 |
Correct |
1 ms |
336 KB |
Output is correct |
| 36 |
Correct |
1 ms |
336 KB |
Output is correct |
| 37 |
Correct |
1 ms |
336 KB |
Output is correct |
| 38 |
Correct |
1 ms |
336 KB |
Output is correct |
| 39 |
Correct |
1 ms |
336 KB |
Output is correct |
| 40 |
Correct |
1 ms |
336 KB |
Output is correct |
| 41 |
Correct |
1 ms |
336 KB |
Output is correct |
| 42 |
Correct |
1 ms |
336 KB |
Output is correct |
| 43 |
Correct |
1 ms |
336 KB |
Output is correct |
| 44 |
Correct |
1 ms |
508 KB |
Output is correct |
| 45 |
Correct |
1 ms |
336 KB |
Output is correct |
| 46 |
Correct |
1 ms |
336 KB |
Output is correct |
| 47 |
Correct |
1 ms |
336 KB |
Output is correct |
| 48 |
Correct |
1 ms |
336 KB |
Output is correct |
| 49 |
Correct |
1 ms |
336 KB |
Output is correct |
| 50 |
Correct |
1 ms |
336 KB |
Output is correct |
| 51 |
Correct |
1 ms |
336 KB |
Output is correct |
| 52 |
Correct |
1 ms |
336 KB |
Output is correct |
| 53 |
Correct |
1 ms |
336 KB |
Output is correct |
| 54 |
Correct |
1 ms |
336 KB |
Output is correct |
| 55 |
Correct |
1 ms |
592 KB |
Output is correct |
| 56 |
Correct |
1 ms |
336 KB |
Output is correct |
| 57 |
Correct |
2 ms |
592 KB |
Output is correct |
| 58 |
Correct |
28 ms |
2384 KB |
Output is correct |
| 59 |
Correct |
224 ms |
18164 KB |
Output is correct |
| 60 |
Correct |
233 ms |
18256 KB |
Output is correct |
| 61 |
Correct |
241 ms |
18424 KB |
Output is correct |
| 62 |
Correct |
1 ms |
336 KB |
Output is correct |
| 63 |
Correct |
224 ms |
17500 KB |
Output is correct |
| 64 |
Correct |
181 ms |
18040 KB |
Output is correct |
| 65 |
Correct |
195 ms |
18036 KB |
Output is correct |
| 66 |
Correct |
161 ms |
18248 KB |
Output is correct |
| 67 |
Correct |
167 ms |
18236 KB |
Output is correct |
| 68 |
Correct |
166 ms |
18252 KB |
Output is correct |
| 69 |
Correct |
178 ms |
17992 KB |
Output is correct |
| 70 |
Correct |
19 ms |
2504 KB |
Output is correct |
| 71 |
Correct |
22 ms |
2384 KB |
Output is correct |
| 72 |
Correct |
19 ms |
2384 KB |
Output is correct |
| 73 |
Correct |
19 ms |
2384 KB |
Output is correct |
| 74 |
Correct |
22 ms |
2400 KB |
Output is correct |
| 75 |
Correct |
19 ms |
2384 KB |
Output is correct |
| 76 |
Correct |
19 ms |
2384 KB |
Output is correct |
| 77 |
Correct |
19 ms |
2384 KB |
Output is correct |
| 78 |
Correct |
19 ms |
2352 KB |
Output is correct |
| 79 |
Correct |
19 ms |
2384 KB |
Output is correct |
| 80 |
Correct |
19 ms |
2384 KB |
Output is correct |
| 81 |
Correct |
19 ms |
2384 KB |
Output is correct |
| 82 |
Correct |
19 ms |
2476 KB |
Output is correct |
| 83 |
Correct |
20 ms |
2348 KB |
Output is correct |
| 84 |
Correct |
19 ms |
2552 KB |
Output is correct |
| 85 |
Correct |
25 ms |
2384 KB |
Output is correct |
| 86 |
Correct |
20 ms |
2512 KB |
Output is correct |
| 87 |
Correct |
19 ms |
2384 KB |
Output is correct |
| 88 |
Correct |
21 ms |
2384 KB |
Output is correct |
| 89 |
Correct |
22 ms |
2384 KB |
Output is correct |
| 90 |
Correct |
20 ms |
2384 KB |
Output is correct |
