/*
Idea:
- http://codeforces.com/blog/entry/57637?#comment-413356 (Problem 3)
*/
// debug 11.35
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define INF (1 << 30)
#define MOD (1000 * 1000 * 1000 + 7)
#define maxn 3111
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pii;
char str[maxn][maxn];
int dp[maxn][maxn][3];
int n, m;
bool can(int x, int y, char c){
if(x < 1 || x > n || y < 1 && y > m)
return 0;
return (str[x][y] == c);
}
int fun(int x, int y, int t){ // 0 - nothing, 1 - horizontal, 2 - vertical
if(x < 1 || x > n || y < 1 && y > m)
return 0;
int &cur = dp[x][y][t];
if(cur != -1)
return cur;
int add = 0;
if(t == 1 && can(x, y - 1, 'R') && can(x, y, 'G') && can(x, y + 1, 'W'))
add = 1;
if(t == 2 && can(x - 1, y, 'R') && can(x, y, 'G') && can(x + 1, y, 'W'))
add = 1;
cur = 0;
if(t != 0 && add == 0)
return cur;
for(int i = 0; i < 3; i++){
if(t + i == 3)
continue;
cur = max(cur, fun(x - 1, y + 1, i) + add);
}
return cur;
}
int main(){
scanf("%d%d", &n, &m);
memset(dp, -1, sizeof(dp));
for(int i = 1; i <= n; i++)
scanf("%s", str[i] + 1);
int ans = 0;
for(int i = 1; i <= n; i++){
int tren = max(fun(i, 1, 0), max(fun(i, 1, 1), fun(i, 1, 2)));
ans += tren;
// cout << i << " 1:" << tren << endl;
}
for(int i = 2; i <= m; i++){
ans += max(fun(n, i, 0), max(fun(n, i, 1), fun(n, i, 2)));
// cout << i << " 1:" << tren << endl;
}
printf("%d\n", ans);
return 0;
}
Compilation message
dango_maker.cpp: In function 'bool can(int, int, char)':
dango_maker.cpp:29:29: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
if(x < 1 || x > n || y < 1 && y > m)
~~~~~~^~~~~~~~
dango_maker.cpp: In function 'int fun(int, int, int)':
dango_maker.cpp:36:29: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
if(x < 1 || x > n || y < 1 && y > m)
~~~~~~^~~~~~~~
dango_maker.cpp: In function 'int main()':
dango_maker.cpp:64:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &n, &m);
~~~~~^~~~~~~~~~~~~~~~
dango_maker.cpp:68:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%s", str[i] + 1);
~~~~~^~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
102 ms |
114040 KB |
Output is correct |
| 2 |
Correct |
92 ms |
114080 KB |
Output is correct |
| 3 |
Correct |
101 ms |
114080 KB |
Output is correct |
| 4 |
Correct |
104 ms |
114220 KB |
Output is correct |
| 5 |
Correct |
106 ms |
114220 KB |
Output is correct |
| 6 |
Correct |
103 ms |
114220 KB |
Output is correct |
| 7 |
Correct |
107 ms |
114220 KB |
Output is correct |
| 8 |
Correct |
93 ms |
114220 KB |
Output is correct |
| 9 |
Correct |
95 ms |
114220 KB |
Output is correct |
| 10 |
Correct |
91 ms |
114220 KB |
Output is correct |
| 11 |
Correct |
103 ms |
114304 KB |
Output is correct |
| 12 |
Correct |
93 ms |
114304 KB |
Output is correct |
| 13 |
Correct |
99 ms |
114304 KB |
Output is correct |
| 14 |
Correct |
88 ms |
114304 KB |
Output is correct |
| 15 |
Correct |
91 ms |
114304 KB |
Output is correct |
| 16 |
Correct |
94 ms |
114304 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
102 ms |
114040 KB |
Output is correct |
| 2 |
Correct |
92 ms |
114080 KB |
Output is correct |
| 3 |
Correct |
101 ms |
114080 KB |
Output is correct |
| 4 |
Correct |
104 ms |
114220 KB |
Output is correct |
| 5 |
Correct |
106 ms |
114220 KB |
Output is correct |
| 6 |
Correct |
103 ms |
114220 KB |
Output is correct |
| 7 |
Correct |
107 ms |
114220 KB |
Output is correct |
| 8 |
Correct |
93 ms |
114220 KB |
Output is correct |
| 9 |
Correct |
95 ms |
114220 KB |
Output is correct |
| 10 |
Correct |
91 ms |
114220 KB |
Output is correct |
| 11 |
Correct |
103 ms |
114304 KB |
Output is correct |
| 12 |
Correct |
93 ms |
114304 KB |
Output is correct |
| 13 |
Correct |
99 ms |
114304 KB |
Output is correct |
| 14 |
Correct |
88 ms |
114304 KB |
Output is correct |
| 15 |
Correct |
91 ms |
114304 KB |
Output is correct |
| 16 |
Correct |
94 ms |
114304 KB |
Output is correct |
| 17 |
Correct |
89 ms |
114304 KB |
Output is correct |
| 18 |
Correct |
91 ms |
114360 KB |
Output is correct |
| 19 |
Correct |
89 ms |
114360 KB |
Output is correct |
| 20 |
Correct |
93 ms |
114360 KB |
Output is correct |
| 21 |
Correct |
97 ms |
114360 KB |
Output is correct |
| 22 |
Correct |
97 ms |
114360 KB |
Output is correct |
| 23 |
Correct |
100 ms |
114360 KB |
Output is correct |
| 24 |
Correct |
103 ms |
114360 KB |
Output is correct |
| 25 |
Correct |
91 ms |
114360 KB |
Output is correct |
| 26 |
Correct |
89 ms |
114360 KB |
Output is correct |
| 27 |
Correct |
105 ms |
114360 KB |
Output is correct |
| 28 |
Correct |
100 ms |
114360 KB |
Output is correct |
| 29 |
Correct |
103 ms |
114360 KB |
Output is correct |
| 30 |
Correct |
99 ms |
114360 KB |
Output is correct |
| 31 |
Correct |
101 ms |
114360 KB |
Output is correct |
| 32 |
Correct |
97 ms |
114360 KB |
Output is correct |
| 33 |
Correct |
94 ms |
114360 KB |
Output is correct |
| 34 |
Correct |
92 ms |
114360 KB |
Output is correct |
| 35 |
Correct |
90 ms |
114360 KB |
Output is correct |
| 36 |
Correct |
100 ms |
114360 KB |
Output is correct |
| 37 |
Correct |
89 ms |
114360 KB |
Output is correct |
| 38 |
Correct |
99 ms |
114384 KB |
Output is correct |
| 39 |
Correct |
97 ms |
114384 KB |
Output is correct |
| 40 |
Correct |
97 ms |
114384 KB |
Output is correct |
| 41 |
Correct |
90 ms |
114384 KB |
Output is correct |
| 42 |
Correct |
98 ms |
114384 KB |
Output is correct |
| 43 |
Correct |
102 ms |
114384 KB |
Output is correct |
| 44 |
Correct |
101 ms |
114384 KB |
Output is correct |
| 45 |
Correct |
96 ms |
114384 KB |
Output is correct |
| 46 |
Correct |
93 ms |
114472 KB |
Output is correct |
| 47 |
Correct |
92 ms |
114472 KB |
Output is correct |
| 48 |
Correct |
94 ms |
114472 KB |
Output is correct |
| 49 |
Correct |
86 ms |
114472 KB |
Output is correct |
| 50 |
Correct |
94 ms |
114472 KB |
Output is correct |
| 51 |
Correct |
91 ms |
114472 KB |
Output is correct |
| 52 |
Correct |
99 ms |
114472 KB |
Output is correct |
| 53 |
Correct |
97 ms |
114472 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
102 ms |
114040 KB |
Output is correct |
| 2 |
Correct |
92 ms |
114080 KB |
Output is correct |
| 3 |
Correct |
101 ms |
114080 KB |
Output is correct |
| 4 |
Correct |
104 ms |
114220 KB |
Output is correct |
| 5 |
Correct |
106 ms |
114220 KB |
Output is correct |
| 6 |
Correct |
103 ms |
114220 KB |
Output is correct |
| 7 |
Correct |
107 ms |
114220 KB |
Output is correct |
| 8 |
Correct |
93 ms |
114220 KB |
Output is correct |
| 9 |
Correct |
95 ms |
114220 KB |
Output is correct |
| 10 |
Correct |
91 ms |
114220 KB |
Output is correct |
| 11 |
Correct |
103 ms |
114304 KB |
Output is correct |
| 12 |
Correct |
93 ms |
114304 KB |
Output is correct |
| 13 |
Correct |
99 ms |
114304 KB |
Output is correct |
| 14 |
Correct |
88 ms |
114304 KB |
Output is correct |
| 15 |
Correct |
91 ms |
114304 KB |
Output is correct |
| 16 |
Correct |
94 ms |
114304 KB |
Output is correct |
| 17 |
Correct |
89 ms |
114304 KB |
Output is correct |
| 18 |
Correct |
91 ms |
114360 KB |
Output is correct |
| 19 |
Correct |
89 ms |
114360 KB |
Output is correct |
| 20 |
Correct |
93 ms |
114360 KB |
Output is correct |
| 21 |
Correct |
97 ms |
114360 KB |
Output is correct |
| 22 |
Correct |
97 ms |
114360 KB |
Output is correct |
| 23 |
Correct |
100 ms |
114360 KB |
Output is correct |
| 24 |
Correct |
103 ms |
114360 KB |
Output is correct |
| 25 |
Correct |
91 ms |
114360 KB |
Output is correct |
| 26 |
Correct |
89 ms |
114360 KB |
Output is correct |
| 27 |
Correct |
105 ms |
114360 KB |
Output is correct |
| 28 |
Correct |
100 ms |
114360 KB |
Output is correct |
| 29 |
Correct |
103 ms |
114360 KB |
Output is correct |
| 30 |
Correct |
99 ms |
114360 KB |
Output is correct |
| 31 |
Correct |
101 ms |
114360 KB |
Output is correct |
| 32 |
Correct |
97 ms |
114360 KB |
Output is correct |
| 33 |
Correct |
94 ms |
114360 KB |
Output is correct |
| 34 |
Correct |
92 ms |
114360 KB |
Output is correct |
| 35 |
Correct |
90 ms |
114360 KB |
Output is correct |
| 36 |
Correct |
100 ms |
114360 KB |
Output is correct |
| 37 |
Correct |
89 ms |
114360 KB |
Output is correct |
| 38 |
Correct |
99 ms |
114384 KB |
Output is correct |
| 39 |
Correct |
97 ms |
114384 KB |
Output is correct |
| 40 |
Correct |
97 ms |
114384 KB |
Output is correct |
| 41 |
Correct |
90 ms |
114384 KB |
Output is correct |
| 42 |
Correct |
98 ms |
114384 KB |
Output is correct |
| 43 |
Correct |
102 ms |
114384 KB |
Output is correct |
| 44 |
Correct |
101 ms |
114384 KB |
Output is correct |
| 45 |
Correct |
96 ms |
114384 KB |
Output is correct |
| 46 |
Correct |
93 ms |
114472 KB |
Output is correct |
| 47 |
Correct |
92 ms |
114472 KB |
Output is correct |
| 48 |
Correct |
94 ms |
114472 KB |
Output is correct |
| 49 |
Correct |
86 ms |
114472 KB |
Output is correct |
| 50 |
Correct |
94 ms |
114472 KB |
Output is correct |
| 51 |
Correct |
91 ms |
114472 KB |
Output is correct |
| 52 |
Correct |
99 ms |
114472 KB |
Output is correct |
| 53 |
Correct |
97 ms |
114472 KB |
Output is correct |
| 54 |
Correct |
90 ms |
114472 KB |
Output is correct |
| 55 |
Correct |
496 ms |
123644 KB |
Output is correct |
| 56 |
Correct |
102 ms |
123644 KB |
Output is correct |
| 57 |
Correct |
290 ms |
123644 KB |
Output is correct |
| 58 |
Correct |
222 ms |
123644 KB |
Output is correct |
| 59 |
Incorrect |
1178 ms |
123824 KB |
Output isn't correct |
| 60 |
Halted |
0 ms |
0 KB |
- |
