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Submission #255085

# Submission time Handle Problem Language Result Execution time Memory
255085 2020-07-31T08:46:11 Z Goolakh Collecting Stamps 3 (JOI20_ho_t3) C++17
100 / 100
 71 ms 72960 KB 
#include <bits/stdc++.h>
using namespace std;
 
#pragma GCC optimize("O2,no-stack-protector,unroll-loops,fast-math") 
 
#define F first
#define S second
#define pb push_back
#define SZ(x) (ll)(x.size())
#define all(x) x.begin(),x.end()
#define MP make_pair
 
typedef int ll;
typedef long double ld;
typedef pair<ll,ll> pll;
 
//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const ll maxn=2e2+10, maxm=1e3+10, lg=21, mod=1e9+7, inf=1e18;

ll n,L,X[maxn],T[maxn],dp[maxn][maxn][maxn][2],it,tt,ans=0;
void mst(ll &x,ll y){x=min(x,y);}

int main(){
	ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	
	memset(dp,69,sizeof(dp));
	cin>>n>>L;
	for(int i=1;i<=n;i++) cin>>X[i];
	for(int i=1;i<=n;i++) cin>>T[i];
	dp[0][0][0][0]=dp[0][0][1][0]=0;
	for(int b=0;b<=n;b++)for(int f=0;b+f<=n;f++)for(int k=0;k<=b+f;k++){
		it=dp[b][f][k][0];
		if(it<mod){ ans=max(ans,k);
			tt=it+X[f+1]-X[f];
			mst(dp[b][f+1][k+(tt<=T[f+1])][0],tt);
			tt=it+X[f]+L-X[n-b];
			mst(dp[b+1][f][k+(tt<=T[n-b])][1],tt);
		}
		it=dp[b][f][k][1];
		if(it<mod){ ans=max(ans,k);
			tt=it+X[n-b+1]-X[n-b];
			mst(dp[b+1][f][k+(tt<=T[n-b])][1],tt);
			tt=it+L-X[n-b+1]+X[f+1];
			mst(dp[b][f+1][k+(tt<=T[f+1])][0],tt);
		}
	}
	cout<<ans;
	
	return 0;
}

Compilation message

ho_t3.cpp:19:58: warning: overflow in implicit constant conversion [-Woverflow]
 const ll maxn=2e2+10, maxm=1e3+10, lg=21, mod=1e9+7, inf=1e18;
                                                          ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 72824 KB Output is correct
2 Correct 39 ms 72812 KB Output is correct
3 Correct 38 ms 72832 KB Output is correct
4 Correct 37 ms 72868 KB Output is correct
5 Correct 38 ms 72824 KB Output is correct
6 Correct 49 ms 72824 KB Output is correct
7 Correct 39 ms 72824 KB Output is correct
8 Correct 38 ms 72824 KB Output is correct
9 Correct 38 ms 72824 KB Output is correct
10 Correct 39 ms 72824 KB Output is correct
11 Correct 37 ms 72824 KB Output is correct
12 Correct 38 ms 72832 KB Output is correct
13 Correct 38 ms 72824 KB Output is correct
14 Correct 38 ms 72832 KB Output is correct
15 Correct 38 ms 72824 KB Output is correct
16 Correct 38 ms 72824 KB Output is correct
17 Correct 38 ms 72824 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 72824 KB Output is correct
2 Correct 39 ms 72812 KB Output is correct
3 Correct 38 ms 72832 KB Output is correct
4 Correct 37 ms 72868 KB Output is correct
5 Correct 38 ms 72824 KB Output is correct
6 Correct 49 ms 72824 KB Output is correct
7 Correct 39 ms 72824 KB Output is correct
8 Correct 38 ms 72824 KB Output is correct
9 Correct 38 ms 72824 KB Output is correct
10 Correct 39 ms 72824 KB Output is correct
11 Correct 37 ms 72824 KB Output is correct
12 Correct 38 ms 72832 KB Output is correct
13 Correct 38 ms 72824 KB Output is correct
14 Correct 38 ms 72832 KB Output is correct
15 Correct 38 ms 72824 KB Output is correct
16 Correct 38 ms 72824 KB Output is correct
17 Correct 38 ms 72824 KB Output is correct
18 Correct 40 ms 72832 KB Output is correct
19 Correct 39 ms 72824 KB Output is correct
20 Correct 38 ms 72824 KB Output is correct
21 Correct 37 ms 72824 KB Output is correct
22 Correct 37 ms 72824 KB Output is correct
23 Correct 40 ms 72824 KB Output is correct
24 Correct 37 ms 72832 KB Output is correct
25 Correct 38 ms 72824 KB Output is correct
26 Correct 38 ms 72824 KB Output is correct
27 Correct 37 ms 72824 KB Output is correct
28 Correct 37 ms 72824 KB Output is correct
29 Correct 38 ms 72828 KB Output is correct
30 Correct 41 ms 72848 KB Output is correct
31 Correct 37 ms 72824 KB Output is correct
32 Correct 37 ms 72824 KB Output is correct
33 Correct 38 ms 72824 KB Output is correct
34 Correct 37 ms 72824 KB Output is correct
35 Correct 37 ms 72832 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 72824 KB Output is correct
2 Correct 39 ms 72812 KB Output is correct
3 Correct 38 ms 72832 KB Output is correct
4 Correct 37 ms 72868 KB Output is correct
5 Correct 38 ms 72824 KB Output is correct
6 Correct 49 ms 72824 KB Output is correct
7 Correct 39 ms 72824 KB Output is correct
8 Correct 38 ms 72824 KB Output is correct
9 Correct 38 ms 72824 KB Output is correct
10 Correct 39 ms 72824 KB Output is correct
11 Correct 37 ms 72824 KB Output is correct
12 Correct 38 ms 72832 KB Output is correct
13 Correct 38 ms 72824 KB Output is correct
14 Correct 38 ms 72832 KB Output is correct
15 Correct 38 ms 72824 KB Output is correct
16 Correct 38 ms 72824 KB Output is correct
17 Correct 38 ms 72824 KB Output is correct
18 Correct 58 ms 72952 KB Output is correct
19 Correct 48 ms 72824 KB Output is correct
20 Correct 41 ms 72824 KB Output is correct
21 Correct 48 ms 72824 KB Output is correct
22 Correct 53 ms 72824 KB Output is correct
23 Correct 42 ms 72824 KB Output is correct
24 Correct 39 ms 72828 KB Output is correct
25 Correct 42 ms 72824 KB Output is correct
26 Correct 39 ms 72824 KB Output is correct
27 Correct 43 ms 72952 KB Output is correct
28 Correct 39 ms 72824 KB Output is correct
29 Correct 43 ms 72832 KB Output is correct
30 Correct 39 ms 72824 KB Output is correct
31 Correct 41 ms 72824 KB Output is correct
32 Correct 46 ms 72952 KB Output is correct
33 Correct 41 ms 72824 KB Output is correct
34 Correct 39 ms 72824 KB Output is correct
35 Correct 40 ms 72824 KB Output is correct
36 Correct 48 ms 72828 KB Output is correct
37 Correct 41 ms 72824 KB Output is correct
38 Correct 41 ms 72824 KB Output is correct
39 Correct 41 ms 72824 KB Output is correct
40 Correct 39 ms 72824 KB Output is correct
41 Correct 69 ms 72832 KB Output is correct
42 Correct 42 ms 72824 KB Output is correct
43 Correct 71 ms 72884 KB Output is correct
44 Correct 42 ms 72960 KB Output is correct
45 Correct 70 ms 72920 KB Output is correct
46 Correct 41 ms 72824 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 72824 KB Output is correct
2 Correct 39 ms 72812 KB Output is correct
3 Correct 38 ms 72832 KB Output is correct
4 Correct 37 ms 72868 KB Output is correct
5 Correct 38 ms 72824 KB Output is correct
6 Correct 49 ms 72824 KB Output is correct
7 Correct 39 ms 72824 KB Output is correct
8 Correct 38 ms 72824 KB Output is correct
9 Correct 38 ms 72824 KB Output is correct
10 Correct 39 ms 72824 KB Output is correct
11 Correct 37 ms 72824 KB Output is correct
12 Correct 38 ms 72832 KB Output is correct
13 Correct 38 ms 72824 KB Output is correct
14 Correct 38 ms 72832 KB Output is correct
15 Correct 38 ms 72824 KB Output is correct
16 Correct 38 ms 72824 KB Output is correct
17 Correct 38 ms 72824 KB Output is correct
18 Correct 40 ms 72832 KB Output is correct
19 Correct 39 ms 72824 KB Output is correct
20 Correct 38 ms 72824 KB Output is correct
21 Correct 37 ms 72824 KB Output is correct
22 Correct 37 ms 72824 KB Output is correct
23 Correct 40 ms 72824 KB Output is correct
24 Correct 37 ms 72832 KB Output is correct
25 Correct 38 ms 72824 KB Output is correct
26 Correct 38 ms 72824 KB Output is correct
27 Correct 37 ms 72824 KB Output is correct
28 Correct 37 ms 72824 KB Output is correct
29 Correct 38 ms 72828 KB Output is correct
30 Correct 41 ms 72848 KB Output is correct
31 Correct 37 ms 72824 KB Output is correct
32 Correct 37 ms 72824 KB Output is correct
33 Correct 38 ms 72824 KB Output is correct
34 Correct 37 ms 72824 KB Output is correct
35 Correct 37 ms 72832 KB Output is correct
36 Correct 58 ms 72952 KB Output is correct
37 Correct 48 ms 72824 KB Output is correct
38 Correct 41 ms 72824 KB Output is correct
39 Correct 48 ms 72824 KB Output is correct
40 Correct 53 ms 72824 KB Output is correct
41 Correct 42 ms 72824 KB Output is correct
42 Correct 39 ms 72828 KB Output is correct
43 Correct 42 ms 72824 KB Output is correct
44 Correct 39 ms 72824 KB Output is correct
45 Correct 43 ms 72952 KB Output is correct
46 Correct 39 ms 72824 KB Output is correct
47 Correct 43 ms 72832 KB Output is correct
48 Correct 39 ms 72824 KB Output is correct
49 Correct 41 ms 72824 KB Output is correct
50 Correct 46 ms 72952 KB Output is correct
51 Correct 41 ms 72824 KB Output is correct
52 Correct 39 ms 72824 KB Output is correct
53 Correct 40 ms 72824 KB Output is correct
54 Correct 48 ms 72828 KB Output is correct
55 Correct 41 ms 72824 KB Output is correct
56 Correct 41 ms 72824 KB Output is correct
57 Correct 41 ms 72824 KB Output is correct
58 Correct 39 ms 72824 KB Output is correct
59 Correct 69 ms 72832 KB Output is correct
60 Correct 42 ms 72824 KB Output is correct
61 Correct 71 ms 72884 KB Output is correct
62 Correct 42 ms 72960 KB Output is correct
63 Correct 70 ms 72920 KB Output is correct
64 Correct 41 ms 72824 KB Output is correct
65 Correct 46 ms 72824 KB Output is correct
66 Correct 45 ms 72792 KB Output is correct
67 Correct 45 ms 72824 KB Output is correct
68 Correct 43 ms 72824 KB Output is correct
69 Correct 47 ms 72956 KB Output is correct
70 Correct 46 ms 72832 KB Output is correct
71 Correct 44 ms 72824 KB Output is correct
72 Correct 45 ms 72824 KB Output is correct
73 Correct 43 ms 72824 KB Output is correct
74 Correct 45 ms 72952 KB Output is correct
75 Correct 43 ms 72824 KB Output is correct
76 Correct 53 ms 72824 KB Output is correct
77 Correct 45 ms 72824 KB Output is correct
78 Correct 48 ms 72832 KB Output is correct
79 Correct 44 ms 72832 KB Output is correct
80 Correct 55 ms 72832 KB Output is correct
81 Correct 42 ms 72824 KB Output is correct
82 Correct 48 ms 72880 KB Output is correct
83 Correct 45 ms 72828 KB Output is correct
84 Correct 47 ms 72824 KB Output is correct
85 Correct 45 ms 72824 KB Output is correct
86 Correct 50 ms 72824 KB Output is correct
87 Correct 46 ms 72824 KB Output is correct
88 Correct 51 ms 72840 KB Output is correct
89 Correct 47 ms 72824 KB Output is correct
90 Correct 43 ms 72824 KB Output is correct
91 Correct 53 ms 72824 KB Output is correct
92 Correct 54 ms 72960 KB Output is correct
93 Correct 45 ms 72824 KB Output is correct