oj.uz

Submission #284267

# Submission time Handle Problem Language Result Execution time Memory
284267 2020-08-27T06:17:47 Z YJU Dango Maker (JOI18_dango_maker) C++14
100 / 100
 488 ms 181536 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=3e3+5;
const ld pi=3.14159265359;
const ll INF=(1LL<<60);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()

char c[N][N];
ll dp[N][3],n,m,T[N][N],ans;
vector<ll> D[2*N];

bool valid(ll xa,ll ya,ll xb,ll yb){
	if(xa>xb)swap(xa,xb);
	if(ya>yb)swap(ya,yb);
	ll xm=(xa+xb)/2,ym=(ya+yb)/2;
	if(xa<0||xb>=n||ya<0||yb>=m||c[xm][ym]!='G')return 0;
	if(ya==yb){
		return ((c[xa][ym]=='R'&&c[xb][ym]=='W'));
	}else{
		return ((c[xm][ya]=='R'&&c[xm][yb]=='W'));
	}
}

ll CAL(ll id){
	memset(dp,0,sizeof(dp));
	REP(i,SZ(D[id])){
		dp[i+1][0]=max(dp[i][0],max(dp[i][1],dp[i][2]));
		if(D[id][i]&1)dp[i+1][1]=max(dp[i][0],dp[i][1])+1;
		if(D[id][i]&2)dp[i+1][2]=max(dp[i][0],dp[i][2])+1;
	}
	return max(dp[SZ(D[id])][0],max(dp[SZ(D[id])][1],dp[SZ(D[id])][2]));
}

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>n>>m;
	REP(i,n)REP(j,m){
		cin>>c[i][j];
	}
	REP(i,n)REP(j,m){
		ll nd=i*m+j;
		if(c[i][j]=='G'){
			if(valid(i-1,j,i+1,j))T[i][j]|=1;
			if(valid(i,j-1,i,j+1))T[i][j]|=2;
		}
		D[i+j].pb(T[i][j]);
	}
	REP(i,n+m-1){
		ans+=CAL(i);
	}
	cout<<ans<<"\n";
	return 0;
}

Compilation message

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:56:6: warning: unused variable 'nd' [-Wunused-variable]
   56 |   ll nd=i*m+j;
      |      ^~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 580 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 640 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 640 KB Output is correct
12 Correct 1 ms 640 KB Output is correct
13 Correct 1 ms 640 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 1 ms 512 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 580 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 640 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 640 KB Output is correct
12 Correct 1 ms 640 KB Output is correct
13 Correct 1 ms 640 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 1 ms 640 KB Output is correct
18 Correct 1 ms 640 KB Output is correct
19 Correct 1 ms 640 KB Output is correct
20 Correct 1 ms 640 KB Output is correct
21 Correct 1 ms 640 KB Output is correct
22 Correct 1 ms 640 KB Output is correct
23 Correct 1 ms 640 KB Output is correct
24 Correct 1 ms 536 KB Output is correct
25 Correct 1 ms 640 KB Output is correct
26 Correct 1 ms 512 KB Output is correct
27 Correct 1 ms 640 KB Output is correct
28 Correct 1 ms 640 KB Output is correct
29 Correct 1 ms 640 KB Output is correct
30 Correct 1 ms 640 KB Output is correct
31 Correct 1 ms 640 KB Output is correct
32 Correct 1 ms 640 KB Output is correct
33 Correct 1 ms 640 KB Output is correct
34 Correct 1 ms 640 KB Output is correct
35 Correct 1 ms 640 KB Output is correct
36 Correct 1 ms 640 KB Output is correct
37 Correct 1 ms 640 KB Output is correct
38 Correct 1 ms 640 KB Output is correct
39 Correct 1 ms 640 KB Output is correct
40 Correct 1 ms 640 KB Output is correct
41 Correct 1 ms 640 KB Output is correct
42 Correct 1 ms 640 KB Output is correct
43 Correct 1 ms 640 KB Output is correct
44 Correct 1 ms 640 KB Output is correct
45 Correct 1 ms 640 KB Output is correct
46 Correct 1 ms 768 KB Output is correct
47 Correct 1 ms 640 KB Output is correct
48 Correct 1 ms 640 KB Output is correct
49 Correct 1 ms 640 KB Output is correct
50 Correct 1 ms 640 KB Output is correct
51 Correct 1 ms 640 KB Output is correct
52 Correct 1 ms 640 KB Output is correct
53 Correct 1 ms 640 KB Output is correct

Subtask #3
67.0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 580 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 512 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 640 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 640 KB Output is correct
12 Correct 1 ms 640 KB Output is correct
13 Correct 1 ms 640 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 1 ms 640 KB Output is correct
18 Correct 1 ms 640 KB Output is correct
19 Correct 1 ms 640 KB Output is correct
20 Correct 1 ms 640 KB Output is correct
21 Correct 1 ms 640 KB Output is correct
22 Correct 1 ms 640 KB Output is correct
23 Correct 1 ms 640 KB Output is correct
24 Correct 1 ms 536 KB Output is correct
25 Correct 1 ms 640 KB Output is correct
26 Correct 1 ms 512 KB Output is correct
27 Correct 1 ms 640 KB Output is correct
28 Correct 1 ms 640 KB Output is correct
29 Correct 1 ms 640 KB Output is correct
30 Correct 1 ms 640 KB Output is correct
31 Correct 1 ms 640 KB Output is correct
32 Correct 1 ms 640 KB Output is correct
33 Correct 1 ms 640 KB Output is correct
34 Correct 1 ms 640 KB Output is correct
35 Correct 1 ms 640 KB Output is correct
36 Correct 1 ms 640 KB Output is correct
37 Correct 1 ms 640 KB Output is correct
38 Correct 1 ms 640 KB Output is correct
39 Correct 1 ms 640 KB Output is correct
40 Correct 1 ms 640 KB Output is correct
41 Correct 1 ms 640 KB Output is correct
42 Correct 1 ms 640 KB Output is correct
43 Correct 1 ms 640 KB Output is correct
44 Correct 1 ms 640 KB Output is correct
45 Correct 1 ms 640 KB Output is correct
46 Correct 1 ms 768 KB Output is correct
47 Correct 1 ms 640 KB Output is correct
48 Correct 1 ms 640 KB Output is correct
49 Correct 1 ms 640 KB Output is correct
50 Correct 1 ms 640 KB Output is correct
51 Correct 1 ms 640 KB Output is correct
52 Correct 1 ms 640 KB Output is correct
53 Correct 1 ms 640 KB Output is correct
54 Correct 8 ms 640 KB Output is correct
55 Correct 17 ms 9984 KB Output is correct
56 Correct 9 ms 896 KB Output is correct
57 Correct 16 ms 13696 KB Output is correct
58 Correct 60 ms 26744 KB Output is correct
59 Correct 483 ms 181536 KB Output is correct
60 Correct 473 ms 181368 KB Output is correct
61 Correct 472 ms 181368 KB Output is correct
62 Correct 8 ms 640 KB Output is correct
63 Correct 456 ms 178040 KB Output is correct
64 Correct 484 ms 181368 KB Output is correct
65 Correct 473 ms 181444 KB Output is correct
66 Correct 488 ms 181424 KB Output is correct
67 Correct 418 ms 138424 KB Output is correct
68 Correct 419 ms 138448 KB Output is correct
69 Correct 416 ms 145224 KB Output is correct
70 Correct 49 ms 26872 KB Output is correct
71 Correct 53 ms 26872 KB Output is correct
72 Correct 50 ms 26872 KB Output is correct
73 Correct 51 ms 26912 KB Output is correct
74 Correct 51 ms 26872 KB Output is correct
75 Correct 50 ms 26940 KB Output is correct
76 Correct 63 ms 26872 KB Output is correct
77 Correct 50 ms 26872 KB Output is correct
78 Correct 51 ms 26880 KB Output is correct
79 Correct 52 ms 26880 KB Output is correct
80 Correct 51 ms 26984 KB Output is correct
81 Correct 51 ms 26872 KB Output is correct
82 Correct 51 ms 26872 KB Output is correct
83 Correct 51 ms 27000 KB Output is correct
84 Correct 57 ms 26872 KB Output is correct
85 Correct 63 ms 26872 KB Output is correct
86 Correct 54 ms 26872 KB Output is correct
87 Correct 50 ms 26872 KB Output is correct
88 Correct 50 ms 26964 KB Output is correct
89 Correct 50 ms 26872 KB Output is correct
90 Correct 50 ms 26980 KB Output is correct