#include<bits/stdc++.h>
#define fi first
#define se second
#define pitem item*
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef vector<ll> vl;
const int N=2e2+10;
const int SS=1<<19;
const int INFi=2e9;
const ll INFl=1e16;
const ll mod2=998244353;
const ll mod=1e9+7;
const ll mod3=1000696969;
const ll p=70032301;
const ull p2=913;
const int L=20;
ll t1[N],t2[N],n,dp[N][N][2][N],xd;
void solve(){
cin>>n>>xd;
for(int i=1;i<=n;i++) cin>>t1[i];
for(int i=1;i<=n;i++) cin>>t2[i];
for(int i=0;i<=n+1;i++){
for(int i2=0;i2<=n+1;i2++){
for(int i3=0;i3<2;i3++){
for(int i4=1;i4<=n+1;i4++) dp[i][i2][i3][i4]=-1;
dp[i][i2][i3][0]=INFl;
}
}
}
for(int i=n;i>=0;i--){
for(int i2=n-i;i2>=0;i2--){
for(int i3=0;i3<2;i3++){
for(int i4=1;i4<=n-(i+i2)+1;i4++){
if(!i3 and i==0) continue;
if(i3 and i2==0) continue;
if(i+i2==n){
if(!i3) dp[i][i2][i3][i4]=t2[i];
else dp[i][i2][i3][i4]=t2[n-i2+1];
continue;
}
if(!i3){
dp[i][i2][i3][i4]=max({dp[i][i2][i3][i4],
min(dp[i+1][i2][i3][i4-1]-(t1[i+1]-t1[i]),t2[i]),
dp[i+1][i2][i3][i4]-(t1[i+1]-t1[i]),
min(dp[i][i2+1][1][i4-1]-(t1[i]+xd-t1[n-i2]),t2[i]),
dp[i][i2+1][1][i4]-(t1[i]+xd-t1[n-i2])});
}else{
dp[i][i2][i3][i4]=max({dp[i][i2][i3][i4],
min(dp[i][i2+1][i3][i4-1]-(t1[n-i2+1]-t1[n-i2]),t2[n-i2+1]),
dp[i][i2+1][i3][i4]-(t1[n-i2+1]-t1[n-i2]),
min(dp[i+1][i2][0][i4-1]-(xd-t1[n-i2+1]+t1[i+1]),t2[n-i2+1]),
dp[i+1][i2][0][i4]-(xd-t1[n-i2+1]+t1[i+1])});
}
}
}
}
}
int res=0;
for(int i=1;i<=n;i++){
if(dp[1][0][0][i]-t1[1]>=0 or dp[0][1][1][i]-(xd-t1[n])>=0) res=i;
}
cout<<res<<"\n";
}
int main(){
ios_base::sync_with_stdio(0),cin.tie(0);
int tt=1;
while(tt--) solve();
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
460 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
724 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
596 KB |
Output is correct |
6 |
Correct |
1 ms |
980 KB |
Output is correct |
7 |
Correct |
1 ms |
596 KB |
Output is correct |
8 |
Correct |
1 ms |
724 KB |
Output is correct |
9 |
Correct |
1 ms |
980 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
980 KB |
Output is correct |
13 |
Correct |
1 ms |
980 KB |
Output is correct |
14 |
Correct |
0 ms |
596 KB |
Output is correct |
15 |
Correct |
1 ms |
596 KB |
Output is correct |
16 |
Correct |
1 ms |
980 KB |
Output is correct |
17 |
Correct |
1 ms |
980 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
460 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
724 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
596 KB |
Output is correct |
6 |
Correct |
1 ms |
980 KB |
Output is correct |
7 |
Correct |
1 ms |
596 KB |
Output is correct |
8 |
Correct |
1 ms |
724 KB |
Output is correct |
9 |
Correct |
1 ms |
980 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
980 KB |
Output is correct |
13 |
Correct |
1 ms |
980 KB |
Output is correct |
14 |
Correct |
0 ms |
596 KB |
Output is correct |
15 |
Correct |
1 ms |
596 KB |
Output is correct |
16 |
Correct |
1 ms |
980 KB |
Output is correct |
17 |
Correct |
1 ms |
980 KB |
Output is correct |
18 |
Correct |
1 ms |
1108 KB |
Output is correct |
19 |
Correct |
1 ms |
844 KB |
Output is correct |
20 |
Correct |
1 ms |
980 KB |
Output is correct |
21 |
Correct |
1 ms |
1108 KB |
Output is correct |
22 |
Correct |
1 ms |
724 KB |
Output is correct |
23 |
Correct |
1 ms |
1236 KB |
Output is correct |
24 |
Correct |
1 ms |
1100 KB |
Output is correct |
25 |
Correct |
1 ms |
1108 KB |
Output is correct |
26 |
Correct |
1 ms |
1108 KB |
Output is correct |
27 |
Correct |
1 ms |
596 KB |
Output is correct |
28 |
Correct |
1 ms |
716 KB |
Output is correct |
29 |
Correct |
1 ms |
1228 KB |
Output is correct |
30 |
Correct |
1 ms |
1236 KB |
Output is correct |
31 |
Correct |
1 ms |
1108 KB |
Output is correct |
32 |
Correct |
1 ms |
1108 KB |
Output is correct |
33 |
Correct |
1 ms |
1236 KB |
Output is correct |
34 |
Correct |
1 ms |
1228 KB |
Output is correct |
35 |
Correct |
1 ms |
1236 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
460 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
724 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
596 KB |
Output is correct |
6 |
Correct |
1 ms |
980 KB |
Output is correct |
7 |
Correct |
1 ms |
596 KB |
Output is correct |
8 |
Correct |
1 ms |
724 KB |
Output is correct |
9 |
Correct |
1 ms |
980 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
980 KB |
Output is correct |
13 |
Correct |
1 ms |
980 KB |
Output is correct |
14 |
Correct |
0 ms |
596 KB |
Output is correct |
15 |
Correct |
1 ms |
596 KB |
Output is correct |
16 |
Correct |
1 ms |
980 KB |
Output is correct |
17 |
Correct |
1 ms |
980 KB |
Output is correct |
18 |
Correct |
56 ms |
108708 KB |
Output is correct |
19 |
Correct |
33 ms |
66132 KB |
Output is correct |
20 |
Correct |
17 ms |
35600 KB |
Output is correct |
21 |
Correct |
31 ms |
62528 KB |
Output is correct |
22 |
Correct |
41 ms |
80836 KB |
Output is correct |
23 |
Correct |
15 ms |
30288 KB |
Output is correct |
24 |
Correct |
12 ms |
23752 KB |
Output is correct |
25 |
Correct |
15 ms |
29652 KB |
Output is correct |
26 |
Correct |
5 ms |
11604 KB |
Output is correct |
27 |
Correct |
20 ms |
31004 KB |
Output is correct |
28 |
Correct |
12 ms |
22100 KB |
Output is correct |
29 |
Correct |
16 ms |
31560 KB |
Output is correct |
30 |
Correct |
12 ms |
24932 KB |
Output is correct |
31 |
Correct |
15 ms |
29636 KB |
Output is correct |
32 |
Correct |
7 ms |
15700 KB |
Output is correct |
33 |
Correct |
14 ms |
29644 KB |
Output is correct |
34 |
Correct |
5 ms |
10836 KB |
Output is correct |
35 |
Correct |
15 ms |
29000 KB |
Output is correct |
36 |
Correct |
8 ms |
14036 KB |
Output is correct |
37 |
Correct |
15 ms |
30968 KB |
Output is correct |
38 |
Correct |
9 ms |
17100 KB |
Output is correct |
39 |
Correct |
16 ms |
32208 KB |
Output is correct |
40 |
Correct |
10 ms |
19020 KB |
Output is correct |
41 |
Correct |
85 ms |
133936 KB |
Output is correct |
42 |
Correct |
52 ms |
90456 KB |
Output is correct |
43 |
Correct |
76 ms |
133932 KB |
Output is correct |
44 |
Correct |
46 ms |
89376 KB |
Output is correct |
45 |
Correct |
79 ms |
133880 KB |
Output is correct |
46 |
Correct |
44 ms |
90468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
460 KB |
Output is correct |
2 |
Correct |
1 ms |
468 KB |
Output is correct |
3 |
Correct |
1 ms |
724 KB |
Output is correct |
4 |
Correct |
1 ms |
468 KB |
Output is correct |
5 |
Correct |
1 ms |
596 KB |
Output is correct |
6 |
Correct |
1 ms |
980 KB |
Output is correct |
7 |
Correct |
1 ms |
596 KB |
Output is correct |
8 |
Correct |
1 ms |
724 KB |
Output is correct |
9 |
Correct |
1 ms |
980 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
0 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
980 KB |
Output is correct |
13 |
Correct |
1 ms |
980 KB |
Output is correct |
14 |
Correct |
0 ms |
596 KB |
Output is correct |
15 |
Correct |
1 ms |
596 KB |
Output is correct |
16 |
Correct |
1 ms |
980 KB |
Output is correct |
17 |
Correct |
1 ms |
980 KB |
Output is correct |
18 |
Correct |
1 ms |
1108 KB |
Output is correct |
19 |
Correct |
1 ms |
844 KB |
Output is correct |
20 |
Correct |
1 ms |
980 KB |
Output is correct |
21 |
Correct |
1 ms |
1108 KB |
Output is correct |
22 |
Correct |
1 ms |
724 KB |
Output is correct |
23 |
Correct |
1 ms |
1236 KB |
Output is correct |
24 |
Correct |
1 ms |
1100 KB |
Output is correct |
25 |
Correct |
1 ms |
1108 KB |
Output is correct |
26 |
Correct |
1 ms |
1108 KB |
Output is correct |
27 |
Correct |
1 ms |
596 KB |
Output is correct |
28 |
Correct |
1 ms |
716 KB |
Output is correct |
29 |
Correct |
1 ms |
1228 KB |
Output is correct |
30 |
Correct |
1 ms |
1236 KB |
Output is correct |
31 |
Correct |
1 ms |
1108 KB |
Output is correct |
32 |
Correct |
1 ms |
1108 KB |
Output is correct |
33 |
Correct |
1 ms |
1236 KB |
Output is correct |
34 |
Correct |
1 ms |
1228 KB |
Output is correct |
35 |
Correct |
1 ms |
1236 KB |
Output is correct |
36 |
Correct |
56 ms |
108708 KB |
Output is correct |
37 |
Correct |
33 ms |
66132 KB |
Output is correct |
38 |
Correct |
17 ms |
35600 KB |
Output is correct |
39 |
Correct |
31 ms |
62528 KB |
Output is correct |
40 |
Correct |
41 ms |
80836 KB |
Output is correct |
41 |
Correct |
15 ms |
30288 KB |
Output is correct |
42 |
Correct |
12 ms |
23752 KB |
Output is correct |
43 |
Correct |
15 ms |
29652 KB |
Output is correct |
44 |
Correct |
5 ms |
11604 KB |
Output is correct |
45 |
Correct |
20 ms |
31004 KB |
Output is correct |
46 |
Correct |
12 ms |
22100 KB |
Output is correct |
47 |
Correct |
16 ms |
31560 KB |
Output is correct |
48 |
Correct |
12 ms |
24932 KB |
Output is correct |
49 |
Correct |
15 ms |
29636 KB |
Output is correct |
50 |
Correct |
7 ms |
15700 KB |
Output is correct |
51 |
Correct |
14 ms |
29644 KB |
Output is correct |
52 |
Correct |
5 ms |
10836 KB |
Output is correct |
53 |
Correct |
15 ms |
29000 KB |
Output is correct |
54 |
Correct |
8 ms |
14036 KB |
Output is correct |
55 |
Correct |
15 ms |
30968 KB |
Output is correct |
56 |
Correct |
9 ms |
17100 KB |
Output is correct |
57 |
Correct |
16 ms |
32208 KB |
Output is correct |
58 |
Correct |
10 ms |
19020 KB |
Output is correct |
59 |
Correct |
85 ms |
133936 KB |
Output is correct |
60 |
Correct |
52 ms |
90456 KB |
Output is correct |
61 |
Correct |
76 ms |
133932 KB |
Output is correct |
62 |
Correct |
46 ms |
89376 KB |
Output is correct |
63 |
Correct |
79 ms |
133880 KB |
Output is correct |
64 |
Correct |
44 ms |
90468 KB |
Output is correct |
65 |
Correct |
70 ms |
120956 KB |
Output is correct |
66 |
Correct |
65 ms |
111112 KB |
Output is correct |
67 |
Correct |
55 ms |
106316 KB |
Output is correct |
68 |
Correct |
51 ms |
98252 KB |
Output is correct |
69 |
Correct |
62 ms |
119716 KB |
Output is correct |
70 |
Correct |
64 ms |
114792 KB |
Output is correct |
71 |
Correct |
78 ms |
116028 KB |
Output is correct |
72 |
Correct |
61 ms |
117188 KB |
Output is correct |
73 |
Correct |
58 ms |
108740 KB |
Output is correct |
74 |
Correct |
53 ms |
101680 KB |
Output is correct |
75 |
Correct |
59 ms |
112332 KB |
Output is correct |
76 |
Correct |
67 ms |
128624 KB |
Output is correct |
77 |
Correct |
68 ms |
128568 KB |
Output is correct |
78 |
Correct |
54 ms |
99396 KB |
Output is correct |
79 |
Correct |
56 ms |
102856 KB |
Output is correct |
80 |
Correct |
67 ms |
126196 KB |
Output is correct |
81 |
Correct |
57 ms |
103908 KB |
Output is correct |
82 |
Correct |
62 ms |
109864 KB |
Output is correct |
83 |
Correct |
76 ms |
133940 KB |
Output is correct |
84 |
Correct |
60 ms |
114788 KB |
Output is correct |
85 |
Correct |
66 ms |
124788 KB |
Output is correct |
86 |
Correct |
65 ms |
122244 KB |
Output is correct |
87 |
Correct |
59 ms |
112360 KB |
Output is correct |
88 |
Correct |
85 ms |
135256 KB |
Output is correct |
89 |
Correct |
81 ms |
135256 KB |
Output is correct |
90 |
Correct |
62 ms |
113560 KB |
Output is correct |
91 |
Correct |
72 ms |
135232 KB |
Output is correct |
92 |
Correct |
73 ms |
135244 KB |
Output is correct |
93 |
Correct |
71 ms |
132616 KB |
Output is correct |