# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
1011696 |
2024-07-01T06:30:54 Z |
ttamx |
Trains (BOI24_trains) |
C++17 |
|
177 ms |
128592 KB |
#include <bits/stdc++.h>
using namespace std;
const int N=1e5+5;
const int K=320;
const int MOD=1e9+7;
int n;
int d[N],x[N];
int dp[N],add[N][K];
int ans;
void norm(int &x){
if(x<0)x+=MOD;
if(x>=MOD)x-=MOD;
}
int main(){
cin.tie(nullptr)->sync_with_stdio(false);
cin >> n;
for(int i=1;i<=n;i++)cin >> d[i] >> x[i];
dp[1]=1;
for(int i=1;i<=n;i++){
for(int j=0;j<K;j++){
if(i-j>=0)norm(add[i][j]+=add[i-j][j]);
norm(dp[i]+=add[i][j]);
}
if(d[i]<K){
if(i+d[i]<=n)norm(add[i+d[i]][d[i]]+=dp[i]);
if(i+1LL*d[i]*(x[i]+1)<=n)norm(add[i+d[i]*(x[i]+1)][d[i]]-=dp[i]);
}else{
for(int j=1;j<=x[i]&&i+1LL*j*d[i]<=n;j++){
norm(dp[i+j*d[i]]+=dp[i]);
}
}
norm(ans+=dp[i]);
}
cout << ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
0 ms |
2520 KB |
Output is correct |
6 |
Correct |
0 ms |
2396 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
0 ms |
2396 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
0 ms |
2396 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
0 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
0 ms |
2396 KB |
Output is correct |
18 |
Correct |
0 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
0 ms |
2520 KB |
Output is correct |
6 |
Correct |
0 ms |
2396 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
0 ms |
2396 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
0 ms |
2396 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
0 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
0 ms |
2396 KB |
Output is correct |
18 |
Correct |
0 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
12 ms |
12892 KB |
Output is correct |
21 |
Correct |
4 ms |
6264 KB |
Output is correct |
22 |
Correct |
14 ms |
15152 KB |
Output is correct |
23 |
Correct |
8 ms |
10588 KB |
Output is correct |
24 |
Correct |
5 ms |
7512 KB |
Output is correct |
25 |
Correct |
11 ms |
13660 KB |
Output is correct |
26 |
Correct |
5 ms |
8028 KB |
Output is correct |
27 |
Correct |
11 ms |
13148 KB |
Output is correct |
28 |
Correct |
13 ms |
15164 KB |
Output is correct |
29 |
Correct |
10 ms |
15068 KB |
Output is correct |
30 |
Correct |
11 ms |
15192 KB |
Output is correct |
31 |
Correct |
14 ms |
15196 KB |
Output is correct |
32 |
Correct |
10 ms |
15196 KB |
Output is correct |
33 |
Correct |
12 ms |
14936 KB |
Output is correct |
34 |
Correct |
10 ms |
15136 KB |
Output is correct |
35 |
Correct |
11 ms |
15084 KB |
Output is correct |
36 |
Correct |
12 ms |
15196 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
8 ms |
10588 KB |
Output is correct |
3 |
Correct |
7 ms |
8164 KB |
Output is correct |
4 |
Correct |
11 ms |
13172 KB |
Output is correct |
5 |
Correct |
77 ms |
99920 KB |
Output is correct |
6 |
Correct |
112 ms |
126812 KB |
Output is correct |
7 |
Correct |
136 ms |
126768 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
0 ms |
2396 KB |
Output is correct |
10 |
Correct |
0 ms |
2396 KB |
Output is correct |
11 |
Correct |
12 ms |
14940 KB |
Output is correct |
12 |
Correct |
115 ms |
126800 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
12 ms |
14940 KB |
Output is correct |
15 |
Correct |
118 ms |
126676 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
60 ms |
63056 KB |
Output is correct |
2 |
Correct |
48 ms |
52820 KB |
Output is correct |
3 |
Correct |
107 ms |
126736 KB |
Output is correct |
4 |
Correct |
82 ms |
92896 KB |
Output is correct |
5 |
Correct |
0 ms |
2396 KB |
Output is correct |
6 |
Correct |
1 ms |
2396 KB |
Output is correct |
7 |
Correct |
12 ms |
15132 KB |
Output is correct |
8 |
Correct |
118 ms |
126688 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
0 ms |
2520 KB |
Output is correct |
6 |
Correct |
0 ms |
2396 KB |
Output is correct |
7 |
Correct |
1 ms |
2392 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
0 ms |
2396 KB |
Output is correct |
10 |
Correct |
1 ms |
2396 KB |
Output is correct |
11 |
Correct |
0 ms |
2396 KB |
Output is correct |
12 |
Correct |
1 ms |
2396 KB |
Output is correct |
13 |
Correct |
0 ms |
2396 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
1 ms |
2396 KB |
Output is correct |
16 |
Correct |
1 ms |
2396 KB |
Output is correct |
17 |
Correct |
0 ms |
2396 KB |
Output is correct |
18 |
Correct |
0 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
12 ms |
12892 KB |
Output is correct |
21 |
Correct |
4 ms |
6264 KB |
Output is correct |
22 |
Correct |
14 ms |
15152 KB |
Output is correct |
23 |
Correct |
8 ms |
10588 KB |
Output is correct |
24 |
Correct |
5 ms |
7512 KB |
Output is correct |
25 |
Correct |
11 ms |
13660 KB |
Output is correct |
26 |
Correct |
5 ms |
8028 KB |
Output is correct |
27 |
Correct |
11 ms |
13148 KB |
Output is correct |
28 |
Correct |
13 ms |
15164 KB |
Output is correct |
29 |
Correct |
10 ms |
15068 KB |
Output is correct |
30 |
Correct |
11 ms |
15192 KB |
Output is correct |
31 |
Correct |
14 ms |
15196 KB |
Output is correct |
32 |
Correct |
10 ms |
15196 KB |
Output is correct |
33 |
Correct |
12 ms |
14936 KB |
Output is correct |
34 |
Correct |
10 ms |
15136 KB |
Output is correct |
35 |
Correct |
11 ms |
15084 KB |
Output is correct |
36 |
Correct |
12 ms |
15196 KB |
Output is correct |
37 |
Correct |
0 ms |
2396 KB |
Output is correct |
38 |
Correct |
8 ms |
10588 KB |
Output is correct |
39 |
Correct |
7 ms |
8164 KB |
Output is correct |
40 |
Correct |
11 ms |
13172 KB |
Output is correct |
41 |
Correct |
77 ms |
99920 KB |
Output is correct |
42 |
Correct |
112 ms |
126812 KB |
Output is correct |
43 |
Correct |
136 ms |
126768 KB |
Output is correct |
44 |
Correct |
0 ms |
2396 KB |
Output is correct |
45 |
Correct |
0 ms |
2396 KB |
Output is correct |
46 |
Correct |
0 ms |
2396 KB |
Output is correct |
47 |
Correct |
12 ms |
14940 KB |
Output is correct |
48 |
Correct |
115 ms |
126800 KB |
Output is correct |
49 |
Correct |
1 ms |
2396 KB |
Output is correct |
50 |
Correct |
12 ms |
14940 KB |
Output is correct |
51 |
Correct |
118 ms |
126676 KB |
Output is correct |
52 |
Correct |
60 ms |
63056 KB |
Output is correct |
53 |
Correct |
48 ms |
52820 KB |
Output is correct |
54 |
Correct |
107 ms |
126736 KB |
Output is correct |
55 |
Correct |
82 ms |
92896 KB |
Output is correct |
56 |
Correct |
0 ms |
2396 KB |
Output is correct |
57 |
Correct |
1 ms |
2396 KB |
Output is correct |
58 |
Correct |
12 ms |
15132 KB |
Output is correct |
59 |
Correct |
118 ms |
126688 KB |
Output is correct |
60 |
Correct |
106 ms |
108624 KB |
Output is correct |
61 |
Correct |
113 ms |
127828 KB |
Output is correct |
62 |
Correct |
116 ms |
127316 KB |
Output is correct |
63 |
Correct |
109 ms |
127572 KB |
Output is correct |
64 |
Correct |
114 ms |
128592 KB |
Output is correct |
65 |
Correct |
177 ms |
128080 KB |
Output is correct |
66 |
Correct |
104 ms |
127824 KB |
Output is correct |
67 |
Correct |
105 ms |
128396 KB |
Output is correct |
68 |
Correct |
112 ms |
127824 KB |
Output is correct |
69 |
Correct |
165 ms |
127472 KB |
Output is correct |
70 |
Correct |
111 ms |
127828 KB |
Output is correct |
71 |
Correct |
112 ms |
127572 KB |
Output is correct |
72 |
Correct |
176 ms |
127780 KB |
Output is correct |