# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
995476 |
2024-06-09T07:01:58 Z |
12345678 |
Trains (BOI24_trains) |
C++17 |
|
2000 ms |
3932 KB |
#include <bits/stdc++.h>
using namespace std;
const int nx=1e5+5, mod=1e9+7, kx=255;
int n, d[nx], x[nx], qs[kx][kx], dp[nx], res, k=0;
vector<int> rem[nx];
void add(int idx)
{
if (d[idx]==0) return;
if (d[idx]>k)
{
if (idx+d[idx]>n) return;
for (int i=idx+d[idx], j=0; j<x[idx]&&i<=n; j++, i+=d[idx]) dp[i]=(dp[i]+dp[idx])%mod;
}
else
{
qs[d[idx]][idx%d[idx]]=(qs[d[idx]][idx%d[idx]]+dp[idx])%mod;
if (idx+x[idx]*d[idx]<=n) rem[idx+x[idx]*d[idx]].push_back(idx);
}
}
int main()
{
cin.tie(NULL)->sync_with_stdio(false);
cin>>n;
for (int i=1; i<=n; i++) cin>>d[i]>>x[i];
dp[1]=1;
add(1);
for (int i=2; i<=n; i++)
{
for (int j=1; j<=k; j++) dp[i]=(dp[i]+qs[j][i%j])%mod;
add(i);
for (auto idx:rem[i]) qs[d[idx]][idx%d[idx]]=(((qs[d[idx]][idx%d[idx]]-dp[idx])%mod)+mod)%mod;
}
for (int i=1; i<=n; i++) res=(res+dp[i])%mod;
cout<<res;
}
/*
7
2 4
0 3
4 2
1 4
1 1
2 1
4 2
*/
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2648 KB |
Output is correct |
2 |
Correct |
1 ms |
2652 KB |
Output is correct |
3 |
Correct |
1 ms |
2652 KB |
Output is correct |
4 |
Correct |
1 ms |
2652 KB |
Output is correct |
5 |
Correct |
1 ms |
2652 KB |
Output is correct |
6 |
Correct |
1 ms |
2652 KB |
Output is correct |
7 |
Correct |
1 ms |
2652 KB |
Output is correct |
8 |
Correct |
1 ms |
2652 KB |
Output is correct |
9 |
Correct |
1 ms |
2652 KB |
Output is correct |
10 |
Correct |
1 ms |
2736 KB |
Output is correct |
11 |
Correct |
1 ms |
2648 KB |
Output is correct |
12 |
Correct |
1 ms |
2652 KB |
Output is correct |
13 |
Correct |
1 ms |
2652 KB |
Output is correct |
14 |
Correct |
1 ms |
2652 KB |
Output is correct |
15 |
Correct |
1 ms |
2652 KB |
Output is correct |
16 |
Correct |
1 ms |
2652 KB |
Output is correct |
17 |
Correct |
1 ms |
2652 KB |
Output is correct |
18 |
Correct |
1 ms |
2652 KB |
Output is correct |
19 |
Correct |
1 ms |
2652 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2648 KB |
Output is correct |
2 |
Correct |
1 ms |
2652 KB |
Output is correct |
3 |
Correct |
1 ms |
2652 KB |
Output is correct |
4 |
Correct |
1 ms |
2652 KB |
Output is correct |
5 |
Correct |
1 ms |
2652 KB |
Output is correct |
6 |
Correct |
1 ms |
2652 KB |
Output is correct |
7 |
Correct |
1 ms |
2652 KB |
Output is correct |
8 |
Correct |
1 ms |
2652 KB |
Output is correct |
9 |
Correct |
1 ms |
2652 KB |
Output is correct |
10 |
Correct |
1 ms |
2736 KB |
Output is correct |
11 |
Correct |
1 ms |
2648 KB |
Output is correct |
12 |
Correct |
1 ms |
2652 KB |
Output is correct |
13 |
Correct |
1 ms |
2652 KB |
Output is correct |
14 |
Correct |
1 ms |
2652 KB |
Output is correct |
15 |
Correct |
1 ms |
2652 KB |
Output is correct |
16 |
Correct |
1 ms |
2652 KB |
Output is correct |
17 |
Correct |
1 ms |
2652 KB |
Output is correct |
18 |
Correct |
1 ms |
2652 KB |
Output is correct |
19 |
Correct |
1 ms |
2652 KB |
Output is correct |
20 |
Correct |
6 ms |
2908 KB |
Output is correct |
21 |
Correct |
1 ms |
2652 KB |
Output is correct |
22 |
Correct |
2 ms |
2908 KB |
Output is correct |
23 |
Correct |
25 ms |
2652 KB |
Output is correct |
24 |
Correct |
1 ms |
2652 KB |
Output is correct |
25 |
Correct |
3 ms |
2908 KB |
Output is correct |
26 |
Correct |
15 ms |
2660 KB |
Output is correct |
27 |
Correct |
50 ms |
2908 KB |
Output is correct |
28 |
Correct |
10 ms |
2908 KB |
Output is correct |
29 |
Correct |
69 ms |
2904 KB |
Output is correct |
30 |
Correct |
2 ms |
2908 KB |
Output is correct |
31 |
Correct |
39 ms |
2908 KB |
Output is correct |
32 |
Correct |
69 ms |
2908 KB |
Output is correct |
33 |
Correct |
2 ms |
2908 KB |
Output is correct |
34 |
Correct |
2 ms |
2908 KB |
Output is correct |
35 |
Correct |
2 ms |
2908 KB |
Output is correct |
36 |
Correct |
5 ms |
2944 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2652 KB |
Output is correct |
2 |
Correct |
26 ms |
2896 KB |
Output is correct |
3 |
Correct |
15 ms |
2648 KB |
Output is correct |
4 |
Correct |
50 ms |
2908 KB |
Output is correct |
5 |
Correct |
7 ms |
3672 KB |
Output is correct |
6 |
Execution timed out |
2096 ms |
3932 KB |
Time limit exceeded |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
475 ms |
3160 KB |
Output is correct |
2 |
Correct |
352 ms |
3268 KB |
Output is correct |
3 |
Execution timed out |
2052 ms |
3928 KB |
Time limit exceeded |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2648 KB |
Output is correct |
2 |
Correct |
1 ms |
2652 KB |
Output is correct |
3 |
Correct |
1 ms |
2652 KB |
Output is correct |
4 |
Correct |
1 ms |
2652 KB |
Output is correct |
5 |
Correct |
1 ms |
2652 KB |
Output is correct |
6 |
Correct |
1 ms |
2652 KB |
Output is correct |
7 |
Correct |
1 ms |
2652 KB |
Output is correct |
8 |
Correct |
1 ms |
2652 KB |
Output is correct |
9 |
Correct |
1 ms |
2652 KB |
Output is correct |
10 |
Correct |
1 ms |
2736 KB |
Output is correct |
11 |
Correct |
1 ms |
2648 KB |
Output is correct |
12 |
Correct |
1 ms |
2652 KB |
Output is correct |
13 |
Correct |
1 ms |
2652 KB |
Output is correct |
14 |
Correct |
1 ms |
2652 KB |
Output is correct |
15 |
Correct |
1 ms |
2652 KB |
Output is correct |
16 |
Correct |
1 ms |
2652 KB |
Output is correct |
17 |
Correct |
1 ms |
2652 KB |
Output is correct |
18 |
Correct |
1 ms |
2652 KB |
Output is correct |
19 |
Correct |
1 ms |
2652 KB |
Output is correct |
20 |
Correct |
6 ms |
2908 KB |
Output is correct |
21 |
Correct |
1 ms |
2652 KB |
Output is correct |
22 |
Correct |
2 ms |
2908 KB |
Output is correct |
23 |
Correct |
25 ms |
2652 KB |
Output is correct |
24 |
Correct |
1 ms |
2652 KB |
Output is correct |
25 |
Correct |
3 ms |
2908 KB |
Output is correct |
26 |
Correct |
15 ms |
2660 KB |
Output is correct |
27 |
Correct |
50 ms |
2908 KB |
Output is correct |
28 |
Correct |
10 ms |
2908 KB |
Output is correct |
29 |
Correct |
69 ms |
2904 KB |
Output is correct |
30 |
Correct |
2 ms |
2908 KB |
Output is correct |
31 |
Correct |
39 ms |
2908 KB |
Output is correct |
32 |
Correct |
69 ms |
2908 KB |
Output is correct |
33 |
Correct |
2 ms |
2908 KB |
Output is correct |
34 |
Correct |
2 ms |
2908 KB |
Output is correct |
35 |
Correct |
2 ms |
2908 KB |
Output is correct |
36 |
Correct |
5 ms |
2944 KB |
Output is correct |
37 |
Correct |
1 ms |
2652 KB |
Output is correct |
38 |
Correct |
26 ms |
2896 KB |
Output is correct |
39 |
Correct |
15 ms |
2648 KB |
Output is correct |
40 |
Correct |
50 ms |
2908 KB |
Output is correct |
41 |
Correct |
7 ms |
3672 KB |
Output is correct |
42 |
Execution timed out |
2096 ms |
3932 KB |
Time limit exceeded |
43 |
Halted |
0 ms |
0 KB |
- |